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

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, …

2011年2月20日 · When going through one shell script, I saw the term "$?". What is the significance of this term?

2021年10月27日 · 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.

2012年5月8日 · 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 …

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 ...

Here shell is an alias for bash. Chroma has something called Session. Pygments (doc) uses console, shell-session for bash sessions, pwsh-session, ps1con for power shell sessions and …

2014年1月7日 · The if statement in shell uses the command [. Since [ is a command (you could also use 'test'), it requires a space before writing the condition to test. To see the list of …

2010年9月30日 · How to represent multiple conditions in a shell if statement? Asked 15 years, 3 months ago Modified 3 years, 11 months ago Viewed 1.2m times