Difference between revisions of "-z"

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  <code>[[ -z $1 ]] && { [[usage]]; }</code>
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  <nowiki><code>[[ -z $1 ]] && { [[usage]]; }</code></nowiki>
 
  <code>[ -z $1 ] && { [[usage]]; }</code>
 
  <code>[ -z $1 ] && { [[usage]]; }</code>
  

Revision as of 10:28, 3 September 2022

<code>[[ -z $1 ]] && { [[usage]]; }</code>
[ -z $1 ] && { usage; }


Related

function usage() {
    echo "Usage: $(basename $0) Explain options here"
    exit 0
}


See also

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