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

I'm trying to learn shell scripting, and I need to understand someone else's code. What is the $? variable hold? I can't Google search the answer because they block punctuation characters.

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Dec 14, 2012 · That is called a shebang, it tells the shell what program to interpret the script with, when executed. In your example, the script is to be interpreted and run by the bash shell. …

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 …

Difference between $ {} and $ () in a shell script Ask Question Asked 10 years, 3 months ago Modified 7 months ago

What does $# mean in shell? I have code such as if [ $# -eq 0 ] then I want to understand what $# means, but Google search is very bad for searching these kinds of things.

Jul 12, 2010 · What is the purpose of a command that does nothing, being little more than a comment leader, but is actually a shell builtin in and of itself? It's slower than inserting a …

Nov 12, 2012 · I am a system administrator and I have been asked to run a linux script to clean the system. The command is this: perl script.pl > output.log & so this command is …

Shell equality operators (=, ==, -eq) Asked 11 years, 9 months ago Modified 3 years, 4 months ago Viewed 641k times