LINUX
WHAT IS LINUX ?FreeLinux in a Unix-like computer operating system.Linux is a very popular open source operating system....
HISTORY OF LINUX The unix operating system was implemented in 1969, by ken Thompson ,Dennis Ritchi, Douglas Mcllroy and Jo...
Linux is Virus Free!!                 Linux is "virus-free"
WHY LINUX IS VIRES FREE?Most of the viruses are in the for of executable files Thus the viruses will be able to execute an
WHAT IS KERNEL?Kernel is used in UNIX like systems and is considered to be the heart of the operating system
TYPE OF KERNELMICROKERNEL(takes the approach of only managing cpu, memory &ipc).MONOLITHIC KERNEL(opposite to microkerne...
KERNEL ACTIVITIESThe Kernel task manager allows tasks to run concurrently.Managing the computer resources.Kernel is res...
WHAT IS LINUX SHELL ?Linux shell is a user interface used for executing the commands.Shell is a program the user uses for...
TYPES OF LINUX SHELLSBourne Shell(Steve Bourne).C Shell(Bill Joy).TC Shell.Korn Shell(David Korn).Bourne-Again Shell(...
Linux Command BasicsTo execute a command, type its name         and argumen                    ls -l /etc     Command name...
DEADLY COMMANDS IN LINUXrm -rf / – Deletes Everything!:(){ :|: & };: – Fork Bombmkfs.ext4 /dev/sda1 – Formats a Hard Dr...
ADVANTAGES OF LINUXCOST.LINUX IS EASY TO INSTALL!.LINUX IS VERY STABLE.SECURITY.CHOICE(Freedom).SOFTWARE.HARDWARE....
DISADVANTAGES OF LINUXUNDERSTANDING.MANY WINDOWS PROGRAMS WILL NOT RUN IN LINUX..ALTERNATIVE PROGRAMS.MORE TECHNICAL A...
THANK YOU
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Linux

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Linux

  1. 1. LINUX
  2. 2. WHAT IS LINUX ?FreeLinux in a Unix-like computer operating system.Linux is a very popular open source operating system.Linux is the software on a computer that enables applications and thecomputer operater to access the devices on the computer to perform desired functions.
  3. 3. HISTORY OF LINUX The unix operating system was implemented in 1969, by ken Thompson ,Dennis Ritchi, Douglas Mcllroy and Joe Ossanna. 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 0.0.1Ken Thompson and Dennis Ritchie Linus Torvalds
  4. 4. Linux is Virus Free!! Linux is "virus-free"
  5. 5. WHY LINUX IS VIRES FREE?Most of the viruses are in the for of executable files Thus the viruses will be able to execute an
  6. 6. WHAT IS KERNEL?Kernel is used in UNIX like systems and is considered to be the heart of the operating system
  7. 7. TYPE OF KERNELMICROKERNEL(takes the approach of only managing cpu, memory &ipc).MONOLITHIC KERNEL(opposite to microkernel).HYBRID KERNEL(have ability to pick superviser mode &user mode).
  8. 8. KERNEL ACTIVITIESThe Kernel task manager allows tasks to run concurrently.Managing the computer resources.Kernel is responsible for Process management.Responds to system calls.
  9. 9. WHAT IS LINUX SHELL ?Linux shell is a user interface used for executing the commands.Shell is a program the user uses for executing the commands. In UNIX
  10. 10. TYPES OF LINUX SHELLSBourne Shell(Steve Bourne).C Shell(Bill Joy).TC Shell.Korn Shell(David Korn).Bourne-Again Shell(Brian Fox and Chet Ramey).
  11. 11. Linux Command BasicsTo execute a command, type its name and argumen ls -l /etc Command name Arguments Options (flags)
  12. 12. DEADLY COMMANDS IN LINUXrm -rf / – Deletes Everything!:(){ :|: & };: – Fork Bombmkfs.ext4 /dev/sda1 – Formats a Hard Drivecommand > /dev/sda – Writes Directly to a Hard Drivedd if=/dev/random of=/dev/sda – Writes Junk Onto amv ~ /dev/null – Moves Your Home Directory to a Black
  13. 13. ADVANTAGES OF LINUXCOST.LINUX IS EASY TO INSTALL!.LINUX IS VERY STABLE.SECURITY.CHOICE(Freedom).SOFTWARE.HARDWARE.LINUX TYPICALLY DOES NOT SLOW DOWN
  14. 14. DISADVANTAGES OF LINUXUNDERSTANDING.MANY WINDOWS PROGRAMS WILL NOT RUN IN LINUX..ALTERNATIVE PROGRAMS.MORE TECHNICAL ABILITY NEEDED.
  15. 15. THANK YOU

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