On Mon, Sep 19, 2005 at 07:45:50PM +0400, Alexey Tourbin wrote:
> questionable

Portable way:

$ sh -c 'false; exit $?'; echo rc=$?
rc=1
$ sh -c '/bin/false; exit $?'; echo rc=$?
rc=1
$ sh -c '! false; exit $?'; echo rc=$?
rc=0
$ sh -c '! /bin/false; exit $?'; echo rc=$?
rc=0


-- 
ldv