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 11 years, 11 months ago Modified 3 years, 5 months ago Viewed 647k times

Oct 4, 2016 · 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 examples for uses of...

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 ...

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, etc.

Nov 15, 2010 · A bashism is a shell feature which is only supported in bash and certain other more advanced shells. It will not work under busybox sh or dash (which is /bin/sh on a lot of distros), or …

Feb 27, 2011 · There is a variation of running multiple commands in one line in the shell where you want them to run simultaneously rather than one after the other. The OP was interested in the latter but I …

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I am writing a shell script to run under the KornShell (ksh) on AIX. I would like to use the mkdir command to create a directory. But the directory may already exist, in which case I do not want to...

Feb 7, 2014 · How do I pause my shell script for a second before continuing? Asked 11 years, 9 months ago Modified 3 months ago Viewed 1.8m times