Linux Origins (GNU Not UNIX)

In 1990, A Finnish student by name Linus Torvalds studying in the University of Helsinki came into contact with Andy Tanenbaum’s OS, Minx. Linus Wanted to upgrade Minx by putting in more features and provements. But he was prohibited by

Linus Torvalds

Tanenbaum to do so. Then Linus decided to write his own kernel and released it under GPL. This kernel is now popularly known as Linux.Linux torvalds father of Linux

Why Linux:

­         Fresh implement of UNIX APIs

­         Open Source development model

­         Supports wide variety of hardware

­         Supports many networking protocols and configurations Multi user and multi tasking Fully supported

No Virus:

­         Windows is vulnerable to 60000 known viruses while UNIX? Linux are to very few, can count one hand. Why?

­         Protected kernel, no open module segment

­         There are 400 plus Linux distribution, so virus for what Linux Distribution?

RHEL 5:

• Focused on mature open source technology
• 18-24 month release cycle
• Two variants available
  • Server
  • Client
  • Purchased with one year Red hat Network subscription and support contract
    • Support available for seven years after release
    • Up to 27×7 coverage plans available

RHEL Version Description:

Kernel 2.6.18-8.e15 on i686 GNU/Linux

2=Major Version 6=Minor Version 18=Patch Number 8=Revision Number e15=release