# $FreeBSD$ failures= failure() { echo "Error at line $1" >&2 failures=x$failures } ( exec -- >/dev/null echo bad ) [ $? = 0 ] || failure $LINENO ( exec -- ${SH} -c 'exit 42' echo bad ) [ $? = 42 ] || failure $LINENO ( exec -- /var/empty/nosuch echo bad ) 2>/dev/null [ $? = 127 ] || failure $LINENO test -z "$failures"