Linux

What is Linux?
Linux is a clone of the operating system UNIX, written from scratch by Linus Torvalds with assistance from a loosely-knit team of hackers across the net. It aims towards POSIX and Single UNIX Specification compliance.

It has all the features you would expect in a modern fully-fledged Unix, including true multitasking, virtual memory, shared libraries, demand loading, shared copy-on-write executables, proper memory management, and TCP/IP networking.

Linux was first developed for 32-bit x86-based PCs (386 or higher). These days it also runs on (at least) the Compaq AlphaAXP, SunSPARC and UltraSPARC, Motorola 68000, PowerPC, PowerPC64, ARM, Hitachi SuperH, IBM S/390, MIPS, HP PA-RISC, Intel IA-64, DEC VAX, AMD x86-64 and CRIS architectures.

Linux is easily portable to most general-purpose 32- or 64-bit architectures as long as they have a paged memory management unit (PMMU) and a port of the GNU C compiler (gcc).

Some basic commands
Some basic linux commands, just practice them with all the information you got below:

The best way to find information on how to use a command is the man command. This command tells you a lot of specific information on a command. Try man man for a start.

Some handy function keys
copied and extended from: PUSCII - # http://www.puscii.nl/

Related
--> Debian,GNU,:Category:Linux Distributions,Linus Torvalds,FSF,Unix


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