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

Difference between $ {} and $ () in a shell script Ask Question Asked 10 years, 5 months ago Modified 10 months ago

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 …

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.

Nov 28, 2019 · First of all, avoid doing text-parsing with shell loops. It is hard to do, easy to get wrong and very hard to read. And slow. Very, very, slow. Instead, use something like awk …

This has confused me a lot in trying to write shell script pipelines with different logic based on some test (e.g. exiting if a file doesn't exist vs continuing the pipeline).

Sep 6, 2017 · 169 Does any one have a template shell script for doing something with ls for a list of directory names and looping through each one and doing something? I'm planning to do ls …

Shell script echo new line to file Ask Question Asked 14 years, 4 months ago Modified 12 years, 4 months ago

$ ./my_script -p '/some/path' -a5 Argument p_out is /some/path Argument arg_1 is 5 There is a helpful Small getopts tutorial or you can type help getopts at the shell prompt. Edit: The …

Jul 5, 2018 · The relevant man page to check for this is that of the shell itself, bash, because -f is functionality that the shell provides, it's a bash built-in. On my system (CentOS 7), the fine …