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.

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 …

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 …

Sep 14, 2012 · $! is the PID of the most recent background command. $0 is the name of the shell or shell script. Most of the above can be found under Special Parameters in the Bash …

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 …

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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 …

May 18, 2010 · Special shell variables verbose If set, causes the words of each command to be printed, after history substitution (if any). Set by the -v command line option. echo If set, each …

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 …

You'll need to complete a few actions and gain 15 reputation points before being able to upvote. Upvoting indicates when questions and answers are useful. What's reputation and how do I …