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Sep 22, 2020 · Bash is the GNU Project's shell—the Bourne Again SHell. This is an sh-compatible shell that incorporates useful features from the Korn shell (ksh) and the C shell (csh). It is intended to conform to the IEEE POSIX P1003.2/ISO 9945.2 Shell and Tools standard.
Bash is the shell, or command language interpreter, for the GNU operating system. The name is an acronym for the ‘Bourne-Again SHell’, a pun on Stephen Bourne, the author of the direct ancestor of the current Unix shell sh, which appeared in the Seventh Edition Bell Labs Research version of Unix.
Sep 14, 2012 · In Bash, there appear to be several variables which hold special, consistently-meaning values. For instance, ./myprogram &; echo $! will return the PID of the process which backgrounded myprog...
Write yours! Variables · Functions · Interpolation · Brace expansions · Loops · Conditional execution · Command substitution · One-page guide to Bash scripting.
Oct 27, 2021 · In shell, when you see. $ command one && command two. the intent is to execute the command that follows the && only if the first command is successful. This is idiomatic of Posix shells, and not only found in Bash. It intends to prevent the running of the second process if the first fails.
Apr 3, 2012 · In brief, $@ expands to the arguments passed from the caller to a function or a script. Its meaning is context-dependent: Inside a function, it expands to the arguments passed to such function. If used in a script (outside a function), it expands to the arguments passed to such script. $ cat my-script. #! /bin/sh.
This guide is an introduction to basic and advanced concepts of the bash shell. It teaches both newcomers and long-time users the best ways to write safe and robust bash scripts, and how to interact efficiently and speedily with the shell as a command line interface.
Sep 26, 2022 · GNU Bash manual. Free Software Foundation. last updated September 26, 2022. This manual (bash) is available in the following formats: HTML (848K bytes) - entirely on one web page. HTML - with one web page per node. HTML compressed (192K gzipped characters) - entirely on one web page.
Bash is a legitimate interface to your computer, and it's not just for server admins and programmers. It can be your desktop, your word processor, your graphics editing application, and much, much more. Some people use Bash more than they use desktop apps.
This chapter provides basic instructions for installing Bash on the various supported platforms. The distribution supports the GNU operating systems, nearly every version of Unix, and several non-Unix systems such as BeOS and Interix.
