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.

Feb 20, 2011 · This latter usage is faster, does not contaminate the shell's variable namespace with what amounts to temp variables, can often be a lot more readable for humans and …

Feb 10, 2012 · The shell command and any arguments to that command appear as numbered shell variables: $0 has the string value of the command itself, something like script, ./script, …

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 …

In a bash script, using the conditional "or" in an "if" statement Ask Question Asked 13 years, 3 months ago Modified 1 year ago

Dec 16, 2012 · The OP asked "how to make script.sh executable. While you can do that, the original intent of the .sh suffix was to allow you to have a "source" and and "object" file.

Aug 27, 2011 · The variable will be set for the rest of the shell session or until unset. To set an environment variable everytime, use the export command in the .bashrc file (or the appropriate …

For reading the script and executing it, I know what it does, but not what -lt and -gt are for. Can somebody tell me what is the name of that kind of 'tool' and what they (-lt and -gt) do?

Here is some handy information from the ABSG: "Redirection simply means capturing output from a file, command, program, or script and sending it as input to another file, command, program, …

Jun 7, 2013 · 0 I had developed the bash script on a Mac, so the first line of the script was #!/opt/homebrew/bin/bash When I tried to run it on ubuntu, I got the bad-interpreter issue. I …