Linux shell scripting
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This document outlines 3 questions for a Linux shell scripting self-learning assignment. Question 1 asks to write a script to continually print the current time in the upper right corner while allowing normal user tasks. Question 2 asks to write a script displaying various system configurations like the logged in user, shell, home directory, OS, path, working directory, number of users, OS version, available shells, mouse settings, CPU info, memory info, hard disk info, and file systems. Question 3 asks to write a script to search for text across all files and subfolders of a computer drive. The assignment is due June 28, 2021 before a weekly meeting and scripts should be submitted to the specified Teams folder.
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3. MS Word
4. MS Excel
5. Microsoft Access
6. MS PowerPoint
Operating System 4 1193308760782240 2
Threads allow concurrency within a process by separating the execution state (program counter, registers, stack) from the process (address space, resources). This allows a single process to have multiple execution streams, sharing data through the shared address space. Key benefits are improved responsiveness, easy resource sharing between threads, and ability to utilize multiple cores. Threads can be implemented in the user space or kernel space.
Operating System 4
Threads allow concurrency within a process by separating the execution state (program counter, registers, stack) from the process. This allows a process to have multiple execution streams (threads) that can run independently while sharing the process's resources like memory. Key benefits of threads include improved responsiveness, easy resource sharing between threads, and better utilization of multiprocessor systems.
Linux introductory-course-day-1
This document provides an overview of file administration in Linux. It describes the three types of files in Linux - ordinary disk files which contain user data, special files which represent devices, and directory files which contain other files and directories. It outlines guidelines for naming files and directories, explaining which characters to avoid. It also introduces the file command for determining a file's type and describes the basic Linux directory structure with files and directories organized in a tree format.
Solid-State diskA solid-state drive also known as a solid-state di.pdf
Solid-State disk
A solid-state drive also known as a solid-state disk though it contains neither a real disk nor a
drive speed to spin a disk is a solid-state storage machine. SSD is a pc storage space device that
uses solid state recollection to store in sequence. SSD uses non volatile NAND flash memory
which enable it to train data after the control is detached SSD is normally used to pass on to solid
state storage space that is filled in a hard disk form factor
Advantages are High read bandwidth, higher IOPS, higher mechanical reliability
Disadvantages are Limited capacity, lower streaming write bandwidth
Shell script
A shell script is a computer program planned to run via the UNIX shell, a command line analyst.
The different dialects of shell script are measured to be scripting languages. Usual operation
perform by shell script include file management, program execution, and printing text. Mainly
scripts are compilation of commands to be store in a file. The shell can read file and act the
commands as if they be type at the keyboard. order of n number of commands to you store text
file and execute the file in its place of inflowing commands
System calls
We can speak to For Performing some process users have to Request for a examine since the
System. For Making any Request a user will organize a individual call which is also known as
the System Call
Types of system cell
Process manage
File organization
Device managing
Information protection
Communication
Fork () and excel ()
Fork (): When you come up to to symbolic \"fork in the road\" you normally have two options to
arrest, and your option affects your upcoming. Computer programs arrive at this fork in the way
when they knock the fork () system call. The operating system will make a new method that is
right the same as the close relative process. The comeback value since the system call is the only
mode the process can verify if it was the offered process or a latest one. The comeback value to
the process will be the procedure ID (PID) of the infant, even as the child will get a comeback
value of 0.
Excel (): fork provide a approach for an existing procedure to create a new one, but what about
the case where the new procedure is not part of the same program as main process when a client
starts a command it wants to run in a new procedure, but it is distinct to the shell. This is
anywhere the exec system call comes into play. Exec will replace the satisfying of the now
association process with the in order from a program binary
System programs:
In computer an operating system is a program that acts as a mediator among the client of a
computer and computer hardware. In another method a current system is the set of system
programs. System programs provide a fitting surroundings for program expansion and
implementation con be divided into
File management
Status information
File change
Programming language maintain
Program load
Communication
Application programs
Microkernels
A small modular f.
ubantu ppt.pptx
This document provides an overview and summary of the Ubuntu operating system. It discusses Ubuntu's history beginning with the creation of Linux by Linus Torvalds in 1991. It then covers key aspects of Ubuntu including its design principles, process and memory management, security features, networking capabilities, and graphical user interface. The document also provides examples of basic commands and important directories in Ubuntu. It concludes with recommendations for securing the boot loader to help harden the Ubuntu system.
Browsing Linux Kernel Source
The document discusses the Linux kernel and its structure. The Linux kernel acts as the interface between hardware and software, contains device drivers for peripherals, handles resource allocation and tracking application access to files. It is also responsible for security and access controls for users. The kernel version numbers use even numbers to indicate stable releases.
Computer Science Assignment Help
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Lab 1 Essay
Here are the key points covered in the essay:
- Exercise 15.1 involves creating a custom backup job in Windows 7 to back up selected files and folders to a hard disk partition.
- The C: system drive does not appear as a backup destination because you cannot back up a drive to itself.
- A warning appears when selecting the X: drive for backup because although it appears as a separate drive letter, it is physically located on the same hard disk as the system drive C:. Backing up to this location would not provide the benefits of an off-site backup if the hard disk failed.
- When selecting folders and files for backup, you must ensure the selected items are not part of an operating system
M.c.a. (sem ii) operating systems
Unit I (8 Hrs)
Introduction to System Software , Overview of all system software’s: Operating system
I/O manager, Assembler, Compiler, Linker ,Loader.
Introductory Concepts: Operating system functions and characteristics, historical evolution
of operating systems, Real time systems, Distributed systems.
Unit II (8 Hrs)
Operating Systems: Methodologies for implementation of O/S service system calls,
system programs, Interrupt mechanisms.
Process - Concept of process and threads, Process states, Process management, Context
switching
Interaction between processes and OS Multithreading Process Control, Job schedulers,
Job Scheduling, scheduling criteria, scheduling algorithms
Unit III (8 Hrs)
Concurrency Control : Concurrency and Race Conditions, Mutual exclusion requirements
Software and hardware solutions, Semaphores, Monitors, Classical IPC problems and
solutions.
Deadlock : Characterization, Detection, Recovery, Avoidance and Prevention.
Unit IV (8 Hrs)
Memory management: Contiguous and non-contiguous, Swapping, Paging, Segmentation
and demand Paging, Virtual Memory, Management of Virtual memory: allocation, fetch and
replacement
Unit V (8 Hrs)
File Management: Concept, Access methods, Directory Structure, Protection, File System
implementation, Directory Implementation, Allocation methods, Free Space management,
efficiency and performance
IO systems: disk structure, disk scheduling, disk management.
Unit VI (8 Hrs)
Case Study of Linux: Structure of LINUX, design principles, kernel, process management and
scheduling, file systems installing requirement, basic architecture of UNIX/Linux system, Kernel,
Shell Commands for files and directories cd, cp, mv, rm, mkdir, more, less, creating and viewing
files, using cat, file comparisons, View files, disk related commands, checking disk free spaces,
Essential linux commands.
Understanding shells, Processes in linux – process fundamentals, connecting processes with pipes,
Redirecting input output, manual help, Background processing, managing multiple processes,
changing process priority, scheduling of processes at command, batch commands, kill, ps, who,
sleep, Printing commands, grep, fgrep, find, sort, cal, banner, touch, file, file related commands – ws,sat, cut, grep, dd, etc. Mathematical commands – bc, expr, factor, units. Vi, joe, vim editor
Linux for beginners
This document provides an introduction to the UNIX/Linux operating system. It discusses general remarks about UNIX/Linux, including classification and essential features. It covers first steps at the computer such as user logon/logoff. It also discusses file systems, including file types, paths, and commands like pwd, ls, and cd.
SQL Server on Linux
How SQL Server was ported to Linux? The presentation goes through some of the concepts: SQLOS, Drawbridge and Containers. It shows the role of SQLPAL as a platform abstraction layer.
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VTU 3RD SEM UNIX AND SHELL PROGRAMMING SOLVED PAPERS
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