Shell Script Basics Positional Parameters CbjsvSk8k8c

Web Reference: Nov 17, 2025 · Positional parameters are a set of special variables in shell scripting (like $1, $2, $#) that hold the arguments passed to your script from the command line. Using them is the key to creating powerful, flexible tools. Often, we will want to check to see if we have comand line arguments onwhich to act. There are a couple of ways to do this. First, we could simplycheck to see if $1contains anything like so: Second, the shell maintains a variable called $# that containsthe number of items on the command line in addition to the name of the command($0). This video briefly explores the use of positional parameters in bash shell scripts.

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