Date: Wed, 18 Feb 2009 12:47:01 -0800 From: Chuck Swiger <cswiger@mac.com> To: GESBBB <gesbbb@yahoo.com> Cc: FreeBSD Users Questions <freebsd-questions@freebsd.org> Subject: Re: Problem with BASH and [ ! -t 0 ] test. Message-ID: <5A806B91-857E-4084-9CB3-0F87E2C46786@mac.com> In-Reply-To: <644168.76348.qm@web32101.mail.mud.yahoo.com> References: <502804.7096.qm@web32108.mail.mud.yahoo.com> <499C2F76.30507@infracaninophile.co.uk> <644168.76348.qm@web32101.mail.mud.yahoo.com>
next in thread | previous in thread | raw e-mail | index | archive | help
On Feb 18, 2009, at 12:29 PM, GESBBB wrote:
> I am a little confused. I believe the problem is with the "if [ ! -t
> 0 ]" statement. I tried to redirect the error message; however, it
> still appears in the email sent by CRON. I tried using this
> statement instead: if ( ! tty -s &> /dev/null ) and "if ( ! tty -s )
> &> /dev/null"; however, they also produce an error message although
> the function does work correctly. Is this just something I should
> just ignore, or is there a way to stop the message from being sent
> in the CRON report?
For Bourne shell, classic /bin/sh, and related shells (zsh, ksh), you
can use something like:
case $- in
*i*)
# do stuff for an interactive shell
echo "interactive"
;;
*)
# not interactive
echo "not interactive"
;;
esac
Regards,
--
-Chuck
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?5A806B91-857E-4084-9CB3-0F87E2C46786>