In 3 sentences:
This document provides an overview and history of Linux. It discusses how Linux originated from the GNU project and Richard Stallman's goal of creating free software. It then describes how Linus Torvalds developed the initial Linux kernel in 1991 and how thousands of developers have since contributed to Linux, resulting in it being used widely on various computing platforms today both commercially and non-commercially.
This document provides an overview and history of Linux. It discusses how Linux originated from earlier operating systems like UNIX and the GNU project. Key events mentioned include Richard Stallman founding the GNU project in 1984 to develop a free UNIX-like operating system, and Linus Torvalds starting development of the Linux kernel in 1991. The document also outlines the growth of Linux over time from hundreds of developers in 1992 to millions of users today. It provides examples of popular Linux distributions and default applications.
This document provides an introduction and overview of Linux, including what Linux is, its advantages over other operating systems, how to find different Linux distributions (distros), how to install or test drive a distro, and where to get help both online and locally. The key topics covered are how Linux is an open source alternative to Windows and Apple, how to extend the life of old PCs using Linux, and how to create a bootable USB or DVD to install or try a Linux distro temporarily.
This document provides an introduction to Linux, including:
- A brief history of Linux from its origins in the 1980s to its use today on servers, supercomputers, and other devices.
- An overview of Linux distributions such as Ubuntu, Red Hat Enterprise Linux, and others.
- Popular applications that run on Linux, such as OpenOffice, web browsers, email clients, and multimedia software.
- Languages supported by Linux user interfaces and documentation.
- Reasons for switching to Linux like security, cost savings, and stability compared to other operating systems.
- Considerations for switching like hardware and software compatibility.
The document discusses the components and functions of an operating system. It explains that hardware is the physical elements of a computer system, while the kernel manages processes and resource allocation. The shell provides an interface to access operating system services through either a command-line or graphical user interface. User applications are programs designed for user benefit. It then provides details about specific operating systems like UNIX, Windows, MacOS, Linux, Android and iOS.
The document provides an overview of the Linux operating system, including its origins, capabilities, and essential components. It discusses how Linux began as a hobby for Linus Torvalds in 1991 and has since grown to power servers, supercomputers, and other devices. The document also summarizes that Linux is an open-source, customizable operating system made up of a kernel, operating system, environments, applications, and distributions. It is freely available and developed collaboratively by its user community.
This document provides an overview and history of Linux. It discusses how Linux originated from earlier operating systems like UNIX and the GNU project. Key events mentioned include Richard Stallman founding the GNU project in 1984 to develop a free UNIX-like operating system, and Linus Torvalds starting development of the Linux kernel in 1991. The document also outlines the growth of Linux over time from hundreds of developers in 1992 to millions of users today. It provides examples of popular Linux distributions and default applications.
This document provides an introduction and overview of Linux, including what Linux is, its advantages over other operating systems, how to find different Linux distributions (distros), how to install or test drive a distro, and where to get help both online and locally. The key topics covered are how Linux is an open source alternative to Windows and Apple, how to extend the life of old PCs using Linux, and how to create a bootable USB or DVD to install or try a Linux distro temporarily.
This document provides an introduction to Linux, including:
- A brief history of Linux from its origins in the 1980s to its use today on servers, supercomputers, and other devices.
- An overview of Linux distributions such as Ubuntu, Red Hat Enterprise Linux, and others.
- Popular applications that run on Linux, such as OpenOffice, web browsers, email clients, and multimedia software.
- Languages supported by Linux user interfaces and documentation.
- Reasons for switching to Linux like security, cost savings, and stability compared to other operating systems.
- Considerations for switching like hardware and software compatibility.
The document discusses the components and functions of an operating system. It explains that hardware is the physical elements of a computer system, while the kernel manages processes and resource allocation. The shell provides an interface to access operating system services through either a command-line or graphical user interface. User applications are programs designed for user benefit. It then provides details about specific operating systems like UNIX, Windows, MacOS, Linux, Android and iOS.
The document provides an overview of the Linux operating system, including its origins, capabilities, and essential components. It discusses how Linux began as a hobby for Linus Torvalds in 1991 and has since grown to power servers, supercomputers, and other devices. The document also summarizes that Linux is an open-source, customizable operating system made up of a kernel, operating system, environments, applications, and distributions. It is freely available and developed collaboratively by its user community.
Linux is a free and open-source operating system that was created as a free alternative to proprietary operating systems like UNIX. It was started in 1991 by Linus Torvalds and has grown significantly since then. The document provides an overview of Linux, including its history and origins from UNIX, the GNU project, and early versions developed by Linus Torvalds and others. It describes the growth of Linux and popular distributions like Red Hat, Debian, and Ubuntu. It also summarizes the key components of a default Linux desktop environment.
The document provides information about the Linux operating system project completed by team X.P which includes five members. It discusses what an operating system is and lists some common operating systems. It then focuses on Linux, describing its history starting from Unix, its uses in various devices, features, and advantages over other operating systems like Windows. Some key advantages highlighted are that Linux is free and open source, highly customizable, secure, and requires low resources.
Linux is a freely distributed open source operating system based on Unix. It was developed in 1991 by Linus Torvalds and has gained popularity as a free alternative to proprietary operating systems. There are several popular Linux distributions including Red Hat Linux, Linux Mandrake, Debian/GNU, and SuSE Linux. These distributions bundle Linux with common software like the X Window System, KDE, and GNOME desktop environments. Hardware compatibility has improved with Linux supporting many modern components, though some proprietary drivers may need to be obtained from manufacturers.
The document provides an overview of key components of Linux including processor management using processes and scheduling, file management using a hierarchical directory structure and permissions, memory management using virtual memory and paging, device management through device drivers and identifiers, and the command line interface for navigating the file system and running commands. It describes processes like fork() and exec() for managing processes, and concepts like virtual addressing and page tables for memory management. Device management in Linux treats all devices as files that are accessed through device drivers defined by a major and minor number.
This document provides an overview of the Linux operating system. It discusses that Linux was developed as an alternative to expensive UNIX operating systems and as a free software project. The document outlines the history from the GNU project in 1984 to Linus Torvalds developing the initial Linux kernel in 1991. It describes how Linux is now widely used on servers, supercomputers, embedded systems, and desktop computers. The key advantages of Linux discussed are that it is free, open source, powerful, stable, and secure.
Linux is an open-source operating system that originated as a personal project by Linus Torvalds in 1991. It can run on a variety of devices from servers and desktop computers to smartphones. Some key advantages of Linux include low cost, high performance, strong security, and versatility in being able to run on many system types. Popular Linux distributions include Red Hat Enterprise Linux, Debian, Ubuntu, and Mint. The document provides an overview of the history and development of Linux as well as common myths and facts about the operating system.
BITS: Introduction to linux, distributions and installationBITS
This slide is part of the BITS training session: "Introduction to linux for life sciences."
See http://www.bits.vib.be/index.php?option=com_content&view=article&id=17203890%3Abioperl-additional-material&catid=84&Itemid=284
The document provides an overview of Linux, including its history and features. It discusses how Linux originated from the GNU project and was started by Linus Torvalds. Linux is an open source operating system that can run on various platforms. It provides features like multi-user access, multitasking, and security benefits compared to other operating systems. The document also describes the typical Linux desktop environment and popular software applications available for Linux.
This document discusses several popular Linux distributions: Ubuntu, Linux Mint, Debian, Fedora, Red Hat, and SUSE. It notes that Ubuntu and Linux Mint are well known for desktop use and include media codecs and automatic updates. Debian has been in use since 1993 and forms the base for many other distributions. Fedora features easy graphics driver installation and bleeding edge software. Red Hat is one of the earliest players and is focused on business use. SUSE was purchased by Novell in 2003. The document concludes that the best distribution depends on the user's needs.
Linus Torvalds created the Linux kernel in 1991 and made its source code freely available, creating the foundation for an open-source operating system. Over time, various Linux distributions were developed by independent groups and companies to package Linux along with additional software and create complete operating systems. Popular distributions include Debian, Red Hat Linux/Fedora, Ubuntu, and Arch Linux. Linux also supports a variety of desktop environments for different user preferences, such as KDE, GNOME, Xfce, LXDE, and Cinnamon.
This document provides an introduction to Linux, including its basic computer architecture, operating system concepts, history and origins of Linux as an open source operating system, key features of Linux systems, and how to get started with Linux. It covers the basic components of a computer including the CPU, memory, motherboard, hard drives and how they work together. It discusses the history and development of Linux from its beginnings in 1991 to its widespread adoption today. It also outlines many core features of Linux including file systems, processes, security models, graphical interfaces, networking and distributions. Finally, it provides guidance on how to select a Linux distribution and get involved with user communities.
What is Linux?
Command-line Interface, Shell & BASH
Popular commands
File Permissions and Owners
Installing programs
Piping and Scripting
Variables
Common applications in bioinformatics
Conclusion
This document provides an overview of the Linux operating system. It discusses that Linux was originally developed in 1991 as a free Unix-like kernel and has since grown significantly through contributions from open source developers worldwide. It describes Linux's origins and key characteristics, such as being free and open source, highly customizable, stable, and secure. The document also outlines popular uses of Linux including on servers, smartphones, and embedded devices, and highlights some of its major advantages over other commercial operating systems.
Linux is a free and open-source operating system assembled under a collaborative development model. The Linux kernel was first released in 1991 and has since been ported to run on various hardware platforms. It is widely used today for servers, supercomputers, embedded systems like Android, and desktop systems. Common Linux distributions include desktop environments like GNOME or KDE and include applications like Firefox, LibreOffice, and GIMP. Programming languages widely supported on Linux include C, C++, Java, Python, and Perl. The document then discusses advantages of Linux like low cost, stability, flexibility, security, and its open source nature.
The document provides an introduction to the Linux operating system, discussing its origins from the collaborative efforts of many programmers to create a free and open source alternative to commercial UNIX systems. It describes how Linus Torvalds created the initial Linux kernel in 1991 and how it has since been refined by numerous contributors. The summary concludes that Linux has grown from humble beginnings to become a widely used and respected operating system available across many computing platforms.
Linux and Windows are both operating systems but have key differences. Linux was first released in 1991 as an open source OS developed by Linus Torvalds, while Windows was first released in 1985 as a proprietary OS developed by Microsoft. Linux can be freely downloaded and distributed, though some paid versions exist, while Windows is more expensive to obtain. Both OSes can be used by home and business users but run on different hardware, with Linux supporting more devices.
The document provides an introduction to Linux, describing it as an open source operating system like Windows but with more freedom. It discusses the history and development of Linux, starting from UNIX, and explains key concepts around open source and free software. Additionally, it lists some popular Linux distributions, advantages of using Linux, and examples of organizations that use Linux systems.
Linux is a free and open-source operating system based on the Linux kernel, which was created by Linus Torvalds in 1991. It is widely used on servers, desktops, and embedded devices. Major Linux distributions combine the Linux kernel with tools and libraries from the GNU operating system and various application software into a format that is easy to install and use. Linux has gained popularity for its security, reliability, and low cost as well as avoiding vendor lock-in.
Linux is an open-source operating system that can be used as an alternative to proprietary operating systems like Windows. The document provides an overview of Linux, including its history beginning as a free Unix-like kernel developed by Linus Torvalds. It discusses the GNU project and how Linux combined with GNU software to form a complete free operating system. Additionally, it covers topics like Debian Linux, package management, GUI and CLI interfaces, and basic Linux commands.
- The document discusses the history of UNIX from its origins in the 1960s to its modern descendants like Linux and BSD. It traces the development of UNIX through different versions and describes how it was forked and spread.
- Instructions are provided on installing Debian GNU/Linux and FreeBSD. Basic UNIX commands are demonstrated and explained.
- The goal of the document is to introduce the history and basic usage of UNIX operating systems.
An operating system (OS) manages computer hardware and software resources, performing tasks like memory management, process scheduling, and file management. Early computers did not have operating systems, but tools for system management emerged quickly. Major concepts in OS development included supporting an entire product line with a single OS, like IBM's OS/360, and time-sharing, which allowed multiple users to share expensive computers simultaneously. As microcomputers evolved, minimal OSes were developed for early models, while MS-DOS became widely popular through its inclusion with the IBM PC. By the 1990s, more robust OSes with graphical user interfaces became desirable, leading Microsoft and Apple to develop Windows NT and Mac OS X respectively based on Unix.
Linux is a free and open-source operating system that was created as a free alternative to proprietary operating systems like UNIX. It was started in 1991 by Linus Torvalds and has grown significantly since then. The document provides an overview of Linux, including its history and origins from UNIX, the GNU project, and early versions developed by Linus Torvalds and others. It describes the growth of Linux and popular distributions like Red Hat, Debian, and Ubuntu. It also summarizes the key components of a default Linux desktop environment.
The document provides information about the Linux operating system project completed by team X.P which includes five members. It discusses what an operating system is and lists some common operating systems. It then focuses on Linux, describing its history starting from Unix, its uses in various devices, features, and advantages over other operating systems like Windows. Some key advantages highlighted are that Linux is free and open source, highly customizable, secure, and requires low resources.
Linux is a freely distributed open source operating system based on Unix. It was developed in 1991 by Linus Torvalds and has gained popularity as a free alternative to proprietary operating systems. There are several popular Linux distributions including Red Hat Linux, Linux Mandrake, Debian/GNU, and SuSE Linux. These distributions bundle Linux with common software like the X Window System, KDE, and GNOME desktop environments. Hardware compatibility has improved with Linux supporting many modern components, though some proprietary drivers may need to be obtained from manufacturers.
The document provides an overview of key components of Linux including processor management using processes and scheduling, file management using a hierarchical directory structure and permissions, memory management using virtual memory and paging, device management through device drivers and identifiers, and the command line interface for navigating the file system and running commands. It describes processes like fork() and exec() for managing processes, and concepts like virtual addressing and page tables for memory management. Device management in Linux treats all devices as files that are accessed through device drivers defined by a major and minor number.
This document provides an overview of the Linux operating system. It discusses that Linux was developed as an alternative to expensive UNIX operating systems and as a free software project. The document outlines the history from the GNU project in 1984 to Linus Torvalds developing the initial Linux kernel in 1991. It describes how Linux is now widely used on servers, supercomputers, embedded systems, and desktop computers. The key advantages of Linux discussed are that it is free, open source, powerful, stable, and secure.
Linux is an open-source operating system that originated as a personal project by Linus Torvalds in 1991. It can run on a variety of devices from servers and desktop computers to smartphones. Some key advantages of Linux include low cost, high performance, strong security, and versatility in being able to run on many system types. Popular Linux distributions include Red Hat Enterprise Linux, Debian, Ubuntu, and Mint. The document provides an overview of the history and development of Linux as well as common myths and facts about the operating system.
BITS: Introduction to linux, distributions and installationBITS
This slide is part of the BITS training session: "Introduction to linux for life sciences."
See http://www.bits.vib.be/index.php?option=com_content&view=article&id=17203890%3Abioperl-additional-material&catid=84&Itemid=284
The document provides an overview of Linux, including its history and features. It discusses how Linux originated from the GNU project and was started by Linus Torvalds. Linux is an open source operating system that can run on various platforms. It provides features like multi-user access, multitasking, and security benefits compared to other operating systems. The document also describes the typical Linux desktop environment and popular software applications available for Linux.
This document discusses several popular Linux distributions: Ubuntu, Linux Mint, Debian, Fedora, Red Hat, and SUSE. It notes that Ubuntu and Linux Mint are well known for desktop use and include media codecs and automatic updates. Debian has been in use since 1993 and forms the base for many other distributions. Fedora features easy graphics driver installation and bleeding edge software. Red Hat is one of the earliest players and is focused on business use. SUSE was purchased by Novell in 2003. The document concludes that the best distribution depends on the user's needs.
Linus Torvalds created the Linux kernel in 1991 and made its source code freely available, creating the foundation for an open-source operating system. Over time, various Linux distributions were developed by independent groups and companies to package Linux along with additional software and create complete operating systems. Popular distributions include Debian, Red Hat Linux/Fedora, Ubuntu, and Arch Linux. Linux also supports a variety of desktop environments for different user preferences, such as KDE, GNOME, Xfce, LXDE, and Cinnamon.
This document provides an introduction to Linux, including its basic computer architecture, operating system concepts, history and origins of Linux as an open source operating system, key features of Linux systems, and how to get started with Linux. It covers the basic components of a computer including the CPU, memory, motherboard, hard drives and how they work together. It discusses the history and development of Linux from its beginnings in 1991 to its widespread adoption today. It also outlines many core features of Linux including file systems, processes, security models, graphical interfaces, networking and distributions. Finally, it provides guidance on how to select a Linux distribution and get involved with user communities.
What is Linux?
Command-line Interface, Shell & BASH
Popular commands
File Permissions and Owners
Installing programs
Piping and Scripting
Variables
Common applications in bioinformatics
Conclusion
This document provides an overview of the Linux operating system. It discusses that Linux was originally developed in 1991 as a free Unix-like kernel and has since grown significantly through contributions from open source developers worldwide. It describes Linux's origins and key characteristics, such as being free and open source, highly customizable, stable, and secure. The document also outlines popular uses of Linux including on servers, smartphones, and embedded devices, and highlights some of its major advantages over other commercial operating systems.
Linux is a free and open-source operating system assembled under a collaborative development model. The Linux kernel was first released in 1991 and has since been ported to run on various hardware platforms. It is widely used today for servers, supercomputers, embedded systems like Android, and desktop systems. Common Linux distributions include desktop environments like GNOME or KDE and include applications like Firefox, LibreOffice, and GIMP. Programming languages widely supported on Linux include C, C++, Java, Python, and Perl. The document then discusses advantages of Linux like low cost, stability, flexibility, security, and its open source nature.
The document provides an introduction to the Linux operating system, discussing its origins from the collaborative efforts of many programmers to create a free and open source alternative to commercial UNIX systems. It describes how Linus Torvalds created the initial Linux kernel in 1991 and how it has since been refined by numerous contributors. The summary concludes that Linux has grown from humble beginnings to become a widely used and respected operating system available across many computing platforms.
Linux and Windows are both operating systems but have key differences. Linux was first released in 1991 as an open source OS developed by Linus Torvalds, while Windows was first released in 1985 as a proprietary OS developed by Microsoft. Linux can be freely downloaded and distributed, though some paid versions exist, while Windows is more expensive to obtain. Both OSes can be used by home and business users but run on different hardware, with Linux supporting more devices.
The document provides an introduction to Linux, describing it as an open source operating system like Windows but with more freedom. It discusses the history and development of Linux, starting from UNIX, and explains key concepts around open source and free software. Additionally, it lists some popular Linux distributions, advantages of using Linux, and examples of organizations that use Linux systems.
Linux is a free and open-source operating system based on the Linux kernel, which was created by Linus Torvalds in 1991. It is widely used on servers, desktops, and embedded devices. Major Linux distributions combine the Linux kernel with tools and libraries from the GNU operating system and various application software into a format that is easy to install and use. Linux has gained popularity for its security, reliability, and low cost as well as avoiding vendor lock-in.
Linux is an open-source operating system that can be used as an alternative to proprietary operating systems like Windows. The document provides an overview of Linux, including its history beginning as a free Unix-like kernel developed by Linus Torvalds. It discusses the GNU project and how Linux combined with GNU software to form a complete free operating system. Additionally, it covers topics like Debian Linux, package management, GUI and CLI interfaces, and basic Linux commands.
- The document discusses the history of UNIX from its origins in the 1960s to its modern descendants like Linux and BSD. It traces the development of UNIX through different versions and describes how it was forked and spread.
- Instructions are provided on installing Debian GNU/Linux and FreeBSD. Basic UNIX commands are demonstrated and explained.
- The goal of the document is to introduce the history and basic usage of UNIX operating systems.
An operating system (OS) manages computer hardware and software resources, performing tasks like memory management, process scheduling, and file management. Early computers did not have operating systems, but tools for system management emerged quickly. Major concepts in OS development included supporting an entire product line with a single OS, like IBM's OS/360, and time-sharing, which allowed multiple users to share expensive computers simultaneously. As microcomputers evolved, minimal OSes were developed for early models, while MS-DOS became widely popular through its inclusion with the IBM PC. By the 1990s, more robust OSes with graphical user interfaces became desirable, leading Microsoft and Apple to develop Windows NT and Mac OS X respectively based on Unix.
Linux is a free, open-source operating system based on UNIX with a modular kernel. It uses processes, threads, virtual memory, and files systems. Device drivers allow access to hardware via the block I/O system. Interprocess communication includes signals, pipes, shared memory, and semaphores. Security features authentication via PAM and access controls permissions via user and group IDs.
In the presentation I have tried to cover the Evolution of Linux as an Operating System. The most of the content used is freely available on Internet , I have just tried to streamline it and summarize it as cleanly as possible from my point of view. Any improvements, suggestions, comments are most welcom.
Unix is a multi-user, multi-tasking operating system that was first created in 1969 at Bell Labs. It allows many users to use the system simultaneously running multiple programs. Linux originated in 1991 as a personal project and is now a free, open source Unix-like operating system. It features multi-tasking, virtual memory, networking and more. Linux is widely used for servers, workstations, internet services and more due to its low cost, stability, and reliability compared to other operating systems.
The document discusses the history and characteristics of UNIX operating systems. It describes how UNIX was developed in the 1960s and has since evolved into many different versions. Some key aspects of UNIX include its multi-user and multi-tasking capabilities, large number of free and commercial applications, and importance in internet development. The document also covers UNIX system calls, memory management, process management, and file systems.
This document provides an overview of a 5-day UNIX/Linux training course. The training covers topics such as Linux desktops and administration, Linux command line administration, networking, servers, and programming. Each day focuses on a different aspect of UNIX/Linux including installation, desktop environments, administration tasks from the command line interface, and networking. Common Linux distributions and benefits of UNIX/Linux are also discussed.
This document provides an overview of Linux including:
- Different pronunciations of Linux and the origins of each pronunciation.
- A definition of Linux as a generic term for Unix-like operating systems with graphical user interfaces.
- Why Linux is significant as a powerful, free, and customizable operating system that runs on multiple hardware platforms.
- An introduction to key Linux concepts like multi-user systems, multiprocessing, multitasking and open source software.
- Examples of common Linux commands for file handling, text processing, and system administration.
- Free and open source software began as a social movement promoting software freedom and sharing. Linux was developed as a free UNIX-like operating system to provide an alternative to proprietary systems like DOS, Mac OS, and UNIX.
- In 1991, Linus Torvalds began developing the Linux kernel, releasing it under the GNU General Public License to ensure it remained freely available. Thousands of developers soon contributed to the growing Linux system.
- Today Linux powers everything from supercomputers to smartphones. It is distributed both in its raw form and compiled into commercial distributions by vendors like Red Hat who offer support packages. The operating system's flexibility and widespread development community have led to its success.
This document provides an overview of the history and architecture of the Linux operating system. It discusses how Linux originated as a free alternative to proprietary operating systems like DOS, Mac OS, and UNIX. Key individuals in the development of Linux include Linus Torvalds and Richard Stallman. The document also outlines the core components of Linux like the kernel, shell, and system utilities, as well as common uses of Linux as a desktop, server, and firewall platform.
Linux is well-suited for forensic investigations due to its free and open-source tools, flexible environment, and ability to access low-level interfaces. However, its tools are more complicated to use than commercial packages and typically lack technical support. Linux distributions use a directory tree with essential directories like /bin, /etc, /home, and /var. Important commands provide information on processes, network connections, and disk usage. The Linux boot process involves the BIOS, boot loader, kernel initialization, and starting of processes at designated run levels.
Linux is an open-source operating system. It began as a personal project by Linus Torvalds in 1991 to create a free kernel. Since then, Linux has grown to be used widely for servers, desktops, embedded systems, and more. It provides users freedom and control over the operating system through access to its source code. Many popular distributions of Linux exist, including Red Hat Enterprise Linux, Debian, Ubuntu, and Fedora.
The document discusses the history and advantages of Linux compared to other operating systems like Windows, DOS and UNIX. It explains how the GNU project was started to develop a free and open source UNIX-like operating system. It then describes how Linus Torvalds developed the initial Linux kernel in 1991 building on the work of the GNU project. It highlights some key advantages of Linux like high security, many available tools and the flexibility of the environment. It also provides a brief overview of some common Linux components like the kernel, shells, KDE/GNOME desktop environments and the directory structure.
This document provides an introduction to Linux, including:
- An overview of what Linux is, its history originating from UNIX, and popular Linux distributions like Red Hat, Debian, and SuSE.
- A comparison of Linux and Windows in terms of cost, open source vs proprietary software, and operating system stability.
- Details about installing Linux, including partitioning schemes, file system types, and methods of installation like using DVD/CD or a USB drive.
- An overview of basic Linux commands for navigating the file system, like cd, ls, pwd, and man, as well as copying, removing, and viewing files.
- A working example of using Backtrack Linux for phishing
The document provides an overview of Linux and its history. It discusses how Linux originated from Unix and was developed using C programming language. It describes how the GNU operating system project aimed to create a free Unix-like system and how the Linux kernel was created by Linus Torvalds. It highlights popular Linux distributions like Ubuntu, Red Hat, Fedora, Mandriva, SuSE, and Knoppix and their key features. It also outlines advantages of using Linux and programming options available on Linux systems.
This document provides an overview of the history and development of the Linux operating system. It discusses how Linux originated from earlier operating systems like Unix and was completed using software from the GNU project. Key advantages of Linux mentioned include low cost, stability, performance, flexibility and security. The document also describes the file hierarchy and culture of free software in Linux. It provides examples of commands used in Linux and explains the use of sudo for privilege escalation.
The document provides information about open source technologies including the history and development of Unix, Linux, GNU Project, and key distributions. It discusses how Unix was created at Bell Labs in the 1960s and rewritten in C in the 1970s. It outlines the development of Linux by Linus Torvalds in 1991 and the GNU Project launched by Richard Stallman to develop a free Unix-like operating system. Key differences between distributions like Red Hat, Debian, and Slackware are summarized.
Linux operating systems and Bootable PendriveAnkita Tiwari
Brief discription of linux OS and how to make your pendrive Bootable with the help of USBInstaller or Yumi Softwares
Attention: This presentation contains animations, so to have an exact picture you need to download it.
Linux is an open-source operating system based on the Linux kernel. It is used widely in servers, desktops, embedded systems, and other devices. The Linux directory structure is organized with key directories like /bin, /etc, /home, /lib, /usr, and /var that contain essential system files, configurations, user files, libraries, applications, and variable/log files respectively. Popular Linux distributions combine the kernel with applications and provide installation and support.
Chapter 8 - nsa Introduction to Linux.pptgadisaAdamu
Linux is an open-source operating system kernel created by Linus Torvalds. It can run on a variety of systems including servers, desktops, embedded devices, and more. Since its initial release in 1991, the Linux kernel has grown significantly with contributions from thousands of programmers. It is free to use, modify, and distribute, driving its widespread adoption for servers, embedded systems, and as an alternative to other proprietary operating systems.
History of Linux
Brain behind development
Why Linux
GNU
Why GNU ?
Where can you find Linux?
Linux is Best!!
Core components of Linux
File system
Drive letter’s
Security
Facts about Linux
Linux is a free and open-source operating system based on Unix. The document provides an overview of Linux and its history. It discusses how Linux was developed by Linus Torvalds in the early 1990s as an alternative to proprietary Unix. Linux gained popularity due to its open-source nature which allowed many programmers to improve the code. The document also summarizes some key Linux distributions like Ubuntu, commands, and concepts such as file structure and time-sharing.
- Linux originated from the open source software movement started by Richard Stallman and his GNU project in the 1980s. It aimed to create an operating system with source code available to all that could be freely modified and shared.
- Linus Torvalds developed the Linux kernel in 1991 as a hobby. His open source operating system gained popularity and various Linux distributions were later developed by companies and organizations.
- Today Linux powers many servers, embedded systems, and has gained widespread adoption for tasks like web hosting, high-performance computing, and more due to its security, customizability, and low cost. However, it requires more technical expertise from users compared to other operating systems.
This document provides an introduction to the Unix operating system, including Linux. It discusses that Unix is a layered operating system with the kernel interacting directly with hardware to provide services to user programs. Linux is then introduced as a free, open-source operating system based on Unix. The document outlines the directory structure and text editors of Unix and provides information on the Linux kernel, its functions, and different Linux distributions.
- Linux is an open-source operating system whose source code can be modified and redistributed under the GNU GPL license. It is commonly used for servers due to its low setup cost.
- Richard Stallman founded the Free Software Foundation in 1985 in response to companies restricting the sharing and redistribution of software code. He began developing GNU, an open-source OS compatible with Unix.
- In 1990, Linus Torvalds developed the Linux kernel, based on Andy Tanenbaum's Minix OS. When combined with the GNU operating system, this formed a complete open-source operating system now known as Linux.
Hillel kobrovski Linux security overview for cisoHillel Kobrovski
Linux is an open source operating system kernel that is used widely in servers, desktops, embedded devices, and more. Some key points about Linux include:
- Linux started as a hobby project by Linus Torvalds in 1991 and is now widely used due to its flexibility and wide range of applications. It is often bundled with tools from the GNU project to form a complete open source operating system.
- There are many Linux distributions that package the Linux kernel along with other software, with examples including Red Hat, Ubuntu, Debian, and SUSE. Distributions are tailored for different use cases like desktop, server, or embedded systems.
- Linux is open source, allowing anyone to modify the source code
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GraphRAG for life science domain, where you retriever information from biomedical knowledge graphs using LLMs to increase the accuracy and performance of generated answers
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Simplify your search for a reliable Python development partner! This list presents the top 10 trusted US providers offering comprehensive Python development services, ensuring your project's success from conception to completion.
Ivanti’s Patch Tuesday breakdown goes beyond patching your applications and brings you the intelligence and guidance needed to prioritize where to focus your attention first. Catch early analysis on our Ivanti blog, then join industry expert Chris Goettl for the Patch Tuesday Webinar Event. There we’ll do a deep dive into each of the bulletins and give guidance on the risks associated with the newly-identified vulnerabilities.
Skybuffer SAM4U tool for SAP license adoptionTatiana Kojar
Manage and optimize your license adoption and consumption with SAM4U, an SAP free customer software asset management tool.
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Building Production Ready Search Pipelines with Spark and MilvusZilliz
Spark is the widely used ETL tool for processing, indexing and ingesting data to serving stack for search. Milvus is the production-ready open-source vector database. In this talk we will show how to use Spark to process unstructured data to extract vector representations, and push the vectors to Milvus vector database for search serving.
Main news related to the CCS TSI 2023 (2023/1695)Jakub Marek
An English 🇬🇧 translation of a presentation to the speech I gave about the main changes brought by CCS TSI 2023 at the biggest Czech conference on Communications and signalling systems on Railways, which was held in Clarion Hotel Olomouc from 7th to 9th November 2023 (konferenceszt.cz). Attended by around 500 participants and 200 on-line followers.
The original Czech 🇨🇿 version of the presentation can be found here: https://www.slideshare.net/slideshow/hlavni-novinky-souvisejici-s-ccs-tsi-2023-2023-1695/269688092 .
The videorecording (in Czech) from the presentation is available here: https://youtu.be/WzjJWm4IyPk?si=SImb06tuXGb30BEH .
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Fueling AI with Great Data with Airbyte WebinarZilliz
This talk will focus on how to collect data from a variety of sources, leveraging this data for RAG and other GenAI use cases, and finally charting your course to productionalization.
How to Interpret Trends in the Kalyan Rajdhani Mix Chart.pdfChart Kalyan
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https://www.wask.co/ebooks/digital-marketing-trends-in-2024
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HCL Notes and Domino License Cost Reduction in the World of DLAUpanagenda
Webinar Recording: https://www.panagenda.com/webinars/hcl-notes-and-domino-license-cost-reduction-in-the-world-of-dlau/
The introduction of DLAU and the CCB & CCX licensing model caused quite a stir in the HCL community. As a Notes and Domino customer, you may have faced challenges with unexpected user counts and license costs. You probably have questions on how this new licensing approach works and how to benefit from it. Most importantly, you likely have budget constraints and want to save money where possible. Don’t worry, we can help with all of this!
We’ll show you how to fix common misconfigurations that cause higher-than-expected user counts, and how to identify accounts which you can deactivate to save money. There are also frequent patterns that can cause unnecessary cost, like using a person document instead of a mail-in for shared mailboxes. We’ll provide examples and solutions for those as well. And naturally we’ll explain the new licensing model.
Join HCL Ambassador Marc Thomas in this webinar with a special guest appearance from Franz Walder. It will give you the tools and know-how to stay on top of what is going on with Domino licensing. You will be able lower your cost through an optimized configuration and keep it low going forward.
These topics will be covered
- Reducing license cost by finding and fixing misconfigurations and superfluous accounts
- How do CCB and CCX licenses really work?
- Understanding the DLAU tool and how to best utilize it
- Tips for common problem areas, like team mailboxes, functional/test users, etc
- Practical examples and best practices to implement right away
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Are you new to data warehouses (DWH)? Do you need to check whether your data warehouse follows the best practices for a good design? In both cases, this webinar is for you.
A data warehouse is a central relational database that contains all measurements about a business or an organisation. This data comes from a variety of heterogeneous data sources, which includes databases of any type that back the applications used by the company, data files exported by some applications, or APIs provided by internal or external services.
But designing a data warehouse correctly is a hard task, which requires gathering information about the business processes that need to be analysed in the first place. These processes must be translated into so-called star schemas, which means, denormalised databases where each table represents a dimension or facts.
We will discuss these topics:
- How to gather information about a business;
- Understanding dictionaries and how to identify business entities;
- Dimensions and facts;
- Setting a table granularity;
- Types of facts;
- Types of dimensions;
- Snowflakes and how to avoid them;
- Expanding existing dimensions and facts.
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2. Overview
• What is Unix/Linux?
• History of Linux
• Features Supported Under Linux
• The future of Linux
3. Before Linux
• In 80’s, Microsoft’s DOS was the dominated OS for
PC
• Apple MAC was better, but expensive
• UNIX was much better, but much, much more
expensive. Only for minicomputer for commercial
applications
• People was looking for a UNIX based system, which
is cheaper and can run on PC
• Both DOS, MAC and UNIX were proprietary, i.e., the
source code of their kernel is protected
• No modification is possible without paying high
license fees
4. GNU project
– Established in 1984 by Richard Stallman, who believes that
software should be free from restrictions against copying or
modification in order to make better and efficient computer
programs
GNU is a recursive acronym for “GNU's Not Unix”
Aim at developing a complete Unix-like operating
system which is free for copying and modification
Companies make their money by maintaining and
distributing the software, e.g. optimally packaging the
software with different tools (Redhat, Slackware,
Mandrake, SuSE, etc)
Stallman built the first free GNU C Compiler in 1991.
But still, an OS was yet to be developed
5. Beginning of Linux
– A famous professor Andrew Tanenbaum developed Minix, a
simplified version of UNIX that runs on PC
– Minix is for class teaching only. No intention for commercial use
– In Sept 1991, Linus Torvalds, a second year student of Computer
Science at the University of Helsinki, developed the preliminary
kernel of Linux, known as Linux version 0.0.1
6. Message from Professor Andrew Tanenbaum
" I still maintain the point that designing a monolithic
kernel in 1991 is a fundamental error. Be thankful you are
not my student. You would not get a high grade for such
a design :-)“
(Andrew Tanenbaum to Linus Torvalds)
–Soon more than a hundred people joined the Linux
camp. Then thousands. Then hundreds of thousands
–It was licensed under GNU General Public License, thus
ensuring that the source codes will be free for all to copy,
study and to change.
7. Linux Today
– Linux has been used for many computing platforms
– PC, PDA, Supercomputer,…
– Not only character user interface but graphical user interface
is available
– Commercial vendors moved in Linux itself to provide freely
distributed code. They make their money by compiling up
various software and gathering them in a distributable format
– Red Hat, Slackware, etc
8. In order to encourage wide
dissemination of his OS, Linus made the
source code open to public. At the end of
1992 there were about a hundred Linux
developers. Next year there were 1000.
And the numbers multiplied every year.
Recent estimates say about 29 million people use Linux worldwide. The effects
of the dot-com bust, IT slowdown and global economic recession can be clearly
seen.
If you run Linux, add your machine at Linux Counter
Source: The Linux Counter
Linux: No of Users
Growing and growing…
10. Linux - free software
• Free software, as defined by the FSF (Free Software
Foundation), is a "matter of liberty, not price." To qualify as free
software by FSF standards, you must be able to:
– Run the program for any purpose you want to, rather than be
restricted in what you can use it for.
– View the program's source code.
– Study the program's source code and modify it if you need to.
– Share the program with others.
– Improve the program and release those improvements so that
others can use them.
11. Red Hat Linux : One of the original Linux distribution.
The commercial, nonfree version is Red Hat Enterprise Linux, which is aimed at
big companies using Linux servers and desktops in a big way. (NJIT)
Free version: Fedora Project.
Debian GNU/Linux : A free software distribution. Popular for use on servers.
However, Debian is not what many would consider a distribution for beginners, as
it's not designed with ease of use in mind.
SuSE Linux : SuSE was recently purchased by Novell. This distribution is primarily
available for pay because it contains many commercial programs, although there's
a stripped-down free version that you can download.
Mandrake Linux : Mandrake is perhaps strongest on the desktop. Originally based
off of Red Hat Linux.
Gentoo Linux : Gentoo is a specialty distribution meant for programmers.
14. Fedora Core
• Fedora Core is a free operating system
• http://ftp.ale.org/mirrors/fedora/linux/core/5/i386//iso/
15. Other:
•Debian
•Mandrake
•SuSE
The right Linux desktop
There are two major desktops in the Linux world: GNOME
and KDE. What you're looking at in a default Fedora
installation is a Red Hat-customized version of GNOME,
called Bluecurve GNOME.
16. A Web browser: Mozilla
Email: XimianEvolution
Word processor : OpenOffice.org Writer
Presentation program : OpenOffice.org Impress
17. Default Fedora Desktop
The default desktop has three distinct areas.
From top to bottom, the areas are:
The menu panel
The desktop area
The window list panel
18. The Menu Panel
• Applications - The Applications menu contains a variety of icons that
start software applications. It is similar to the Microsoft Windows Start
menu.
• Places - The Places menu contains a customizable list of directories,
mounted volumes, recent documents, and a Search function. Volumes
that are mounted may be external USB drives (flash, hard disk, CD,
etc.), directories shared across a network, or other media devices such
as a portable music player.
• System - The System menu contains a variety of items.
19. System menu
• Log Out
• About
• Help
• Lock Screen
• Preferences
• System Settings: configuration tools that are for
administrative purposes and usually require root
access; that is, when those applications are started,
the root password must be entered to continue.
20. • Mozilla Firefox web browser
• Evolution mail client and personal information manager
• OpenOffice.org Writer is a word processing program
• OpenOffice.org Impress is for creating and giving
presentations
• OpenOffice.org Calc is a spreadsheet tool
Note: There is another way to add an application launcher to the menu panel if the application is already listed in the
Applications menu. Navigate to the application in the Applications menu, right-click on the application, and select Add
this launcher to panel.
21. The Desktop Area
• Computer - This contains all volumes (or disks) mounted on the computer.
These are also listed in the Places menu. Computer is equivalent to My
Computer on Microsoft Windows.
• Home - This is where the logged-in user stores all files by default, such as
music, movies, and documents. There is a different home directory for each
user, and by default users cannot access each others' home directories. Home
is equivalent to My Documents on Microsoft Windows.
• Trash - Deleted files are moved to Trash. Empty Trash by right-clicking the icon
and clicking Empty Trash.
To permanently delete a file and bypass the file's move to Trash, hold down the [Shift] key when
deleting the file.
Right-clicking on the desktop presents a menu of actions related to the desktop area. For
example, clicking on Change Desktop Background lets you choose a different image or
photograph to display on the desktop. It is possible to choose not to have any desktop
background.
26. Other software installed
• Audio Player: The XMMS (X Multimedia System), which
is used to play digital sound files
• CD Player: The default CD player
• Sound Juicer CD Ripper: Burn your own CDs
• Messaging Client: GAIM supports AIM, MSN, ICQ, and
many other popular IM networks
• gFTP: Useful for grabbing files through FTP (File Transfer
Protocol)
28. Linux text-based interface
command to show the content
of current directory
command to show the content
of current directory with option
-al
The prompt $ shows that
bash shell is using
All LINUX commands start with the name of the command
and can be followed by options and arguments.
29. Linux Shell
Shell interprets the command and
request service from kernel
Similar to DOS but DOS has only one
set of interface while Linux can select
different shell
– Bourne Again shell (Bash), TC shell
(Tcsh), Z shell (Zsh)
Kernel
Bash, Tcsh, Zsh
ls pwd
whoami
Different shell has similar but different functionality
Bash is the default for Linux
Graphical user interface of Linux is in fact an application
program work on the shell
31. Directory Tree
(root)
When you log on the the
Linux OS using your
username you are
automatically located in
your home directory.
32. The most important subdirectories
inside the root directory are:
• /bin : Important Linux commands available to the average user.
• /boot : The files necessary for the system to boot. Not all Linux
distributions use this one. Fedora does.
• /dev : All device drivers. Device drivers are the files that your Linux
system uses to talk to your hardware. For example, there's a file in
the /dev directory for your particular make and model of monitor,
and all of your Linux computer's communications with the monitor
go through that file.
• /etc : System configuration files.
• /home : Every user except root gets her own folder in here, named
for her login account. So, the user who logs in with linda has the
directory /home/linda, where all of her personal files are kept.
• /lib : System libraries. Libraries are just bunches of programming
code that the programs on your system use to get things done.
33. The most important subdirectories
inside the root directory are:
• /mnt : Mount points. When you temporarily load the contents of a
CD-ROM or USB drive, you typically use a special name under
/mnt. For example, many distributions (including Fedora) come, by
default, with the directory /mnt/cdrom, which is where your CD-
ROM drive's contents are made accessible.
• /root : The root user's home directory.
• /sbin : Essential commands that are only for the system
administrator.
• /tmp : Temporary files and storage space. Don't put anything in
here that you want to keep. Most Linux distributions (including
Fedora) are set up to delete any file that's been in this directory
longer than three days.
• /usr : Programs and data that can be shared across many systems
and don't need to be changed.
• /var : Data that changes constantly (log files that contain
information about what's happening on your system, data on its
way to the printer, and so on).
34. Home directory
• You can see what your home directory is called by
entering
• pwd (print current working directory)
35. Commands:
/ (root directory)
/root – home directory of the user root
pwd – you can see your home directory
df – to see disk space available
cd – to change to different directory or to go back to home dir
.. - move to parent directory
ls – list the contents of a directory; Options: -l (more info)
-a (displays hidden files)
-t (sort by time)
-r (oldest first)
Example: ls –ltr : display an long list of files that are sorted by time, display the oldest
ones first
Some of the basic commands you
should learn are the ones that help
you navigate the file system.
36. cp : copy one file to another
rm : remove a file
man : ask for the manual (or help) of a command
e.g. man cd ask for the manual of the command cd
cat : to show the content of a text file
e.g. cat abc.txt show the content of abc.txt
whoami : to show the username of the current user
Directory is denoted by a / (slash) character
Executable program by a *
Hidden file preceded by a . (dot)
37. Names in blue are directories, indicated by a
letter d at the beginning of the line
The concept of simple file and
directory is similar to DOS
43. !=
Linux is Not Windows
Problem #1: Linux isn't exactly the same as Windows.
Problem #2: Linux is too different from Windows
Problem #3: Culture shock
Problem #5: The myth of "user-friendly"
44. NJIT and Linux
• RedHat Enterprise Linux 2.6.9-55
• Open Office 2.3.0
45. SSH, Telnet
• SSH (Secure Shell) is a terminal emulation protocol that allows
a user to connect to a remote host via an encrypted and secure
link.
• You can download SSH® Secure Shell™ from the NJIT’s
Public Download Section. SSH® Secure Shell™ also contains
an FTP client.
• Telnet is a terminal emulation protocol that lets a user log in
remotely to other computers on the Internet; it has a command
line interface.
• You can download Tera Term Pro from the Public Download
Section or you can run Windows' telnet client by typing "telnet
afsx.njit.edu" from the "Run..." command in the Start Menu.
46. SSH Secure Shell
• Included License key must be imported.
– Start SSH client.
– Click Help.
– Select "Import License File."
– Browse to the location of the "license.dat" included in zip file.
47.
48.
49. X-Win32
• You can log in to the Linux computers by using X-Win
• Install X-Win on your computer (http://ist.njit.edu/software)
• Connect: Start – All Programs – X-Win32 8.2 – X-Win32