curena
1/19/2017 - 11:45 PM
How to check if a variable is not set in Bash
How to check if a variable is not set in Bash
if [ -z ${var+x} ]; then echo "var is unset"; else echo "var is set to '$var'"; fiHow to check if a variable is not set in Bash
if [ -z ${var+x} ]; then echo "var is unset"; else echo "var is set to '$var'"; fi