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 · Shell scripting: -z and -n options with if Ask Question Asked 11 years, 11 months ago Modified 10 months ago

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 …

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.

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 …

Your command-line environment is the parent of the script's shell, so it does not see the variable assignment. You can use the . (or source) bash command to execute the script commands in …

Shell scripts will run each command sequentially, waiting for the first to finish before the next one starts. You can either join commands with ; or have them on separate lines:

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 …

See What is the difference between > and >> (especially as it relates to use with the cat program)?, What does “3>&1 1>&2 2>&3” do in a script? and of course, your shell's manual. …