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Full Discussion: Run this grep every 10 minutes and do something based on the output
Top Forums Shell Programming and Scripting Run this grep every 10 minutes and do something based on the output Post 302929527 by kraljic on Monday 22nd of December 2014 11:59:09 AM
Old 12-22-2014
Thank You Robin.

I wanted the IF.. THEN.. ELSE block to continue executing every 10 minutes until grep command does not see the the string "Processing" in this file.

Thank You Junior Helper. I think your solution works fine for my requirement. I need to test it in my real life script. THANK YOU.

I was under the impression that the number mentioned for sleep command is in minutes not seconds. Just realized that I was wrong

ie.

sleep 30 means sleep for 30 seconds not 30 minutes .

One more question:
Why are you redirecting the output of grep -v Processing status.txt to bit bucket &>/dev/null ?
 

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LEARN ABOUT CENTOS

rhnsd

RHNSD(8)							   Red Hat, Inc.							  RHNSD(8)

NAME

       rhnsd - A program for querying the Spacewalk server for updates and information.

SYNOPSIS

       rhn_check [options]

DESCRIPTION

       rhnsd  is a background daemon process that periodically polls the Spacewalk server to see if there are any queued actions available. If any
       are queued, rhnsd will execute those actions.

       rhnsd is typically started from the initialization (init) scripts in /etc/init.d/rhnsd.	when it's time to poll the  Spacewalk  server  for
       available updates and actions. The default interval is every 240 minutes.  The minimum polling interval is 60 minutes.

       To  check for updates, rhnsd runs an external program called rhn_check. This is a small application that actually makes the network connec-
       tion to Spacewalk.

       The rhnsd daemon does not listen on any network ports, nor does it ever talk to the network directly. Any network activity is done via  the
       rhn_check utility.

       rhnsd  can  be  configured  by editing the /etc/sysconfig/rhn/rhnsd.  configuration file. This is actually the configuration file the rhnsd
       initialization script /etc/init.d/rhnsd.  uses.

OPTIONS

       -i, --interval
	      Specify the interval that rhnsd should wait between checking the Spacewalk. Default is 240 minutes, the minimum is 60 minutes.  This
	      can also be specified in /etc/sysconfig/rhn/rhnsd

       -f, --foreground
	      force the rhnsd process to run in the foreground instead of automatically backgrounding itself, as it does by default.

FILES

       /etc/sysconfig/rhn/rhnsd
	      Configuration settings for the rhnsd daemon's initialization script.

SEE ALSO

       rhn_check(8), rhn_register(8), rhnsd(8), rhn-profile-sync(8), rhnplugin(8), up2date(5).

AUTHORS

       Preston Brown <pbrown@redhat.com>
       Cristian Gafton <gafton@redhat.com>
       Adrian Likins <alikins@redhat.com>
       James Bowes <jbowes@redhat.com>

BUGS

       Report bugs to <http://bugzilla.redhat.com>.

COPYRIGHT

       Copyright (C) 1999-2006 Red Hat, Inc.

       This is free software; see the source for copying conditions.  There is NO warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICU-
       LAR PURPOSE.

Linux								 2006 November 13							  RHNSD(8)
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