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2. Unix - Wikipedia

   en.wikipedia.org/wiki/Unix

   Unix (/ ˈ j uː n ɪ k s / ⓘ, YOO-niks; trademarked as UNIX) is a family of multitasking, multi-user computer operating systems that derive from the original AT&T Unix, whose development started in 1969 [1] at the Bell Labs research center by Ken Thompson, Dennis Ritchie, and others. [4]

3. Shell (computing) - Wikipedia

   en.wikipedia.org/wiki/Shell_(computing)

   In computing, a shell is a computer program that exposes an operating system's services to a human user or other programs. In general, operating system shells use either a command-line interface (CLI) or graphical user interface (GUI), depending on a computer's role and particular operation. It is named a shell because it is the outermost layer ...

4. Unix shell - Wikipedia

   en.wikipedia.org/wiki/Unix_shell

   A Unix shell is a command-line interpreter or shell that provides a command line user interface for Unix-like operating systems. The shell is both an interactive command language and a scripting language , and is used by the operating system to control the execution of the system using shell scripts .

5. The Unix Programming Environment - Wikipedia

   en.wikipedia.org/wiki/The_Unix_Programming...

   The book starts off with an introduction to Unix for beginners. Next, it goes into the basics of the file system and shell.The reader is led through topics ranging from the use of filters, to how to use C for programming robust Unix applications, and the basics of grep, sed, make, and AWK.

6. Bash (Unix shell) - Wikipedia

   en.wikipedia.org/wiki/Bash_(Unix_shell)

   In computing, Bash (short for "Bourne Again SHell,") [6] is an interactive command interpreter and command programming language developed for UNIX-like operating systems. [7] Created in 1989 [ 8 ] by Brian Fox for the GNU Project , it is supported by the Free Software Foundation and designed as a 100% free alternative for the Bourne shell ( sh ...

7. Shell script - Wikipedia

   en.wikipedia.org/wiki/Shell_script

   At least three DCL implementations for Windows type operating systems—in addition to XLNT, a multiple-use scripting language package which is used with the command shell, Windows Script Host and CGI programming—are available for these systems as well. Mac OS X and subsequent are Unix-like as well.

8. Make (software) - Wikipedia

   en.wikipedia.org/wiki/Make_(software)

   Make is widely used, especially in Unix and Unix-like operating systems, even though many competing technologies and tools are available, including similar tools that perform actions based on dependencies, some compilers and interactively via an integrated development environment.

9. Unix architecture - Wikipedia

   en.wikipedia.org/wiki/Unix_architecture

   A Unix architecture is a computer operating system system architecture that embodies the Unix philosophy. It may adhere to standards such as the Single UNIX Specification (SUS) or similar POSIX IEEE standard. No single published standard describes all Unix architecture computer operating systems — this is in part a legacy of the Unix wars.