[FIXED] How to find whether or not a variable is empty in Bash

Issue

How can I check if a variable is empty in Bash?

Solution

In Bash at least the following command tests if $var is empty:

if [[ -z "$var" ]]; then
   # $var is empty, do what you want
fi

The command man test is your friend.

Answered By - Jay

Answer Checked By - Marilyn (PHPFixing Volunteer)