Get familiar with the special variable $0 in Bash and learn its usage.

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The sign in the bash is used to indicate the variables in a Bash Script. The variable can be used in two ways in Linux: Use to find the logged-in shell - Use to print the name of the script that is being executed. To use the variable in the script, all you have to do is use a simple echo statement.

What is $0 in a Bash Script?