# $FreeBSD: head/bin/sh/tests/execution/set-x1.0 222882 2011-06-08 21:58:19Z jilles $ key='must_contain_this' { r=`set -x; { : "$key"; } 2>&1 >/dev/null`; } 2>/dev/null case $r in *"$key"*) true ;; *) false ;; esac