Shell equality operators (=, ==, -eq) Asked 12 years, 1 month ago Modified 3 years, 7 months ago Viewed 651k times

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.

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, …

May 8, 2012 · I understand the basic difference between an interactive shell and a non-interactive shell. But what exactly differentiates a login shell from a non-login shell? Can you give …

I often come across $?, $0, $1, $2, etc in shell scripting. I know that $? returns the exit status of the last command: echo "this will return 0" echo $? But what do the others do? What ...

Oct 27, 2021 · The shell will try to create directory test and then, only if it was successful will try create file inside it. So you may interrupt a sequence of steps if one of them failed.

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

What is the Linux command to check the server OS and its version? I am connected to the server using shell.

Jan 20, 2025 · Shell scripting: -z and -n options with if Ask Question Asked 12 years ago Modified 11 months ago

The shell executes a function, built-in, executable file, or script ... The shell optionally waits for the command to complete and collects the exit status. At step 6 a built-in will be executed. At step …