Aug 1, 2019 · What does echo $? mean in shell programming? true echo $? # echoes 0 false echo $? # echoes 1 From the manual: (acessible by calling man bash in your shell) ? Expands to the exit status …

Apr 3, 2012 · What does a dollar sign followed by an at-sign (@) mean in a shell script? For example: umbrella_corp_options $@

Shell equality operators (=, ==, -eq) Asked 12 years, 1 month ago Modified 3 years, 7 months ago Viewed 651k times

Oct 27, 2021 · The shell will try to create directory test and then, only if it was successful will try create file inside it. So you may interrupt a sequence of steps if one of them failed.

Sep 17, 2008 · 2 The $$ is the process id of the shell in which your script is running. For more details, see the man page for sh or bash. The man pages can be found be either using a command line "man …

Jan 20, 2025 · You can find a very nice reference for bash's [ aka test builtin's operators here, or by running help test in a bash shell or info bash test or info bash '[' from any shell¹. If you are using a …

Sep 17, 2012 · Meaning of "=~" operator in shell script [duplicate] Asked 13 years, 4 months ago Modified 12 years, 5 months ago Viewed 96k times

Feb 20, 2011 · When going through one shell script, I saw the term "$?". What is the significance of this term?

Jul 22, 2018 · In shell scripts, what is the difference between $@ and $*? Which one is the preferred way to get the script arguments? Are there differences between the different shell interpreters about …

Could we agree that it would be ok to use this simplified syntax inside a function with explicitly declared local "bools"? If one writes a substantial shell script, and has to worry about external scopes fiddling …