Horje
bash check if variable is empty Code Example
bash if null or empty 
if [ -z "$variable" ];
  then echo "$variable is null";
  else echo "$variable is not null";
fi
bash if variable is not empty 
VAR=`echo Hello world`
if [[ -n "$VAR" ]] ; then echo "Variable is set"  ; fi
if [[ -z "$VAR" ]] ; then echo "Variable is null" ; fi
bash check if variable is empty 
if [ -z "$var" ] #return true if $var is unset



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Type:
 Code Example
Category:
 Coding
Sub Category:
 Code Example
Uploaded by:
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Horje