bash if null or empty
if [ -z "$variable" ];
then echo "$variable is null";
else echo "$variable is not null";
fibash if null or empty
if [ -z "$variable" ];
then echo "$variable is null";
else echo "$variable is not null";
fibash if variable is not empty
VAR=`echo Hello world`
if [[ -n "$VAR" ]] ; then echo "Variable is set" ; fi
if [[ -z "$VAR" ]] ; then echo "Variable is null" ; fibash check if variable is empty
if [ -z "$var" ] #return true if $var is unsetCopyright © 2021 Codeinu
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