Date: Wed, 26 Sep 2001 08:17:19 +0200 From: Cliff Sarginson <cliff@raggedclown.net> To: FreeBSD Questions <freebsd-questions@FreeBSD.ORG> Subject: Re: if then statement with grep Message-ID: <20010926081719.D3574@raggedclown.net> In-Reply-To: <XFMail.20010925210314.conrads@home.com>; from conrads@home.com on Tue, Sep 25, 2001 at 09:03:14PM -0500 References: <20010926111238.C99595@k7.mavetju.org> <XFMail.20010925210314.conrads@home.com>
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On Tue, Sep 25, 2001 at 09:03:14PM -0500, Conrad Sabatier wrote: > > On 26-Sep-2001 Edwin Groothuis wrote: > > On Wed, Sep 26, 2001 at 10:56:43AM +1000, BSD Freak wrote: > >> if `grep "expected line" /var/log/mylogfile` does NOT return something > >> then > >> mail -s "Alert" me@mycompany.com > >> otherwise don't bother me > > > > if [ ! -z "`grep "expected line" /var/log/mylogfile`" ]; then > > ... do your stuff here ... > > fi > > Actually, a simple "if ! grep ..." should do the same thing. > Or even grep "expected line" /var/log/mylogfile >/dev/null [ $? -ne 0 ] && { echo "In this house we obey the laws of thermodynamics"; } -- Regards Cliff To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message
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