Linux is a UNIX clone,which has been developed by Linus Torvalds,it was inspired by Minix, a small UNIX system developed by Andy Tanenbaum.The Linux kernel uses no code from AT&T or any other proprietary source, and much of the software available for Linux was developed by the GNU project of the Free Software Foundation in Cambridge, Massachusetts, U.S.A. Linus Torvalds has developed Linux kernel version 0.01. The 0.01 sources weren't even …showed first 75 words of 337 total…

…showed last 75 words of 337 total…based, memory-management paradigm, and other advanced features. Anyone familiar with 80386 protected-mode programming knows that this chip was designed for multitasking systems like UNIX. Linux exploits this functionality. The kernel supports demand-paged, loaded executables. Only those segments of a program which are actually in use are read into memory from disk. Also, copy-on-write pages are shared among executables. If several instances of a program are running at once, they share physical memory, which reduces overall usage.