linux - What does $@ mean in a shell script? - Stack Overflow
Apr 3, 2012 · What does a dollar sign followed by an at-sign (@) mean in a shell script? For example: umbrella_corp_options $@
What is the meaning of $? in a shell script? - Unix & Linux Stack …
Feb 20, 2011 · When going through one shell script, I saw the term "$?". What is the significance of this term?
regex - Meaning of "=~" operator in shell script - Stack Overflow
Sep 17, 2012 · Meaning of "=~" operator in shell script [duplicate] Asked 13 years, 2 months ago Modified 12 years, 4 months ago Viewed 96k times
Shell scripting: -z and -n options with if - Unix & Linux Stack Exchange
Jan 16, 2014 · 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 …
What does $# mean in shell? - Unix & Linux Stack Exchange
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.
What is the meaning of -n, -z, -x, -L, -d, etc... in Shell Script?
Nov 16, 2018 · I often find on files .sh Shell Script in conditionals sintaxis like these:
How can I declare and use Boolean variables in a shell script?
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 …
How to echo shell commands as they are executed - Stack Overflow
May 18, 2010 · Alternatively, these modes can be specified in the script itself, by adding the desired options to the first line shell declaration. Options can be combined, as is usually the case with UNIX …
shell - Difference between sh and Bash - Stack Overflow
Shell - "Shell" is a program, which facilitates the interaction between the user and the operating system (kernel). There are many shell implementations available, like sh, Bash, C shell, Z shell, etc.
When to wrap quotes around a shell variable? - Stack Overflow
Should or should I not wrap quotes around variables in a shell script? For example, is the following correct: