1# $FreeBSD: head/tools/regression/bin/sh/execution/set-x1.0 222882 2011-06-08 21:58:19Z jilles $ 2 3key='must_contain_this' 4{ r=`set -x; { : "$key"; } 2>&1 >/dev/null`; } 2>/dev/null 5case $r in 6*"$key"*) true ;; 7*) false ;; 8esac 9