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A User Manual provided by the GNU Project, also available at info bash, and a technical manual available at man bash. Invocation as a... Interactive shell, Non-interactive shell, or; Login shell; A command-line interface; Exit status codes; Control structures for Condition testing, if, case, select, logical AND (&&) and OR (||), and; Iteration:
xman, an early X11 application for viewing manual pages OpenBSD section 8 intro man page, displaying in a text console. Before Unix (e.g., GCOS), documentation was printed pages, available on the premises to users (staff, students...), organized into steel binders, locked together in one monolithic steel reading rack, bolted to a table or counter, with pages organized for modular information ...
He is the original author of the GNU Bash shell, which he announced as a beta in June 1989. [1] He continued as the primary maintainer of bash until at least early 1993. [2] [3] Fox also built the first interactive online banking software in the U.S. for Wells Fargo in 1995, [4] and he created an open source election system in 2008.
On MS-DOS, the command is available in versions 2 and later. [ 20 ] Nowadays, several incompatible implementations of echo exist on different operating systems (often several on the same system), some of them expanding escape sequences by default, some of them not, some of them accepting options (the list of which varying with implementations ...
Bash Reference Manual Archived 2018-07-14 at the Wayback Machine. 3.6.6 Here Documents Archived 2018-07-14 at the Wayback Machine; 3.6.7 Here Strings Archived 2018-07-14 at the Wayback Machine; Advanced Bash-Scripting Guide Archived 2013-08-14 at the Wayback Machine, Mendel Cooper Chapter 19. Here Documents Archived 2013-08-28 at the Wayback ...
getopts is a built-in Unix shell command for parsing command-line arguments. It is designed to process command line arguments that follow the POSIX Utility Syntax Guidelines, based on the C interface of getopt. The predecessor to getopts was the external program getopt by Unix System Laboratories.
The end of the HELP command output from RT-11SJ displayed on a VT100. The BusyBox HELP command In computing , help is a command in various command line shells such as COMMAND.COM , cmd.exe , Bash , qshell , 4DOS / 4NT , Windows PowerShell , Singularity shell , Python , MATLAB [ 1 ] and GNU Octave . [ 2 ]
For a command-based language, for example, this will include details of every available command and of the syntax for using it. The reference manual is usually separate and distinct from a more detailed programming language specification meant for implementors of the language rather than those who simply use it to accomplish some processing task.