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This guide explains how to determine if a bash variable is empty or not using if command or conditional expression under Linux /Unix like operating systems.
Want to determine if a bash variable is empty? Try:
[ -z "$var" ] && echo "Empty"
LINUX SHELL SCRIPTING: A PROJECT-BASED APPROACH TO LEARNING
LINUX SHELL SCRIPTING: A PROJECT-BASED APPROACH TO LEARNING
Learn how to shell script through project-based training (Bash Scripting, Bash Programming, Sed, Grep, Awk, and More)
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Created by Jason Cannon Last updated 10/2019 English
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