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Full Discussion: Monitor log file
Top Forums Shell Programming and Scripting Monitor log file Post 302639933 by Chubler_XL on Sunday 13th of May 2012 07:39:09 PM
Old 05-13-2012
You could use awk to only look for new occurances of string within log:

(first line creates logfile if none exists - this simplifies rest of code as we can ignore file not existing case).

Code:
[ -f logfile ] || > logfile
LN=$(wc -l < logfile)
stop weblogin &
CHILD=$!
 
while [ -d /proc/$CHILD ] && awk "NR>$LN && /unable to stop weblogin/{exit 1}" logfile
do
   sleep 1
done
[ -d /proc/$CHILD ] && ! awk "NR>$LN && /unable to stop weblogin/{exit 1}" logfile && kill $CHILD


Last edited by Chubler_XL; 05-13-2012 at 08:50 PM..
This User Gave Thanks to Chubler_XL For This Post:
 

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TORRUS_MONITOR(8)						      torrus							 TORRUS_MONITOR(8)

NAME
monitor - Torrus Monitor. SYNOPSIS
torrus monitor --tree=TREENAME [options...] DESCRIPTION
This command starts the Monitor process for the tree TREENAME. By default it forks into a daemon, sets the log output file to /var/log/torrus/monitor.TREENAME.log, performs one monitoring cycle, and sleeps until the next cycle is scheduled. In daemon mode the log file can be reopened by sending it a SIGHUP signal. OPTIONS
--nodaemon Prevents the process from becoming a daemon and sets the log to STDERR. --runonce Instructs the script to run once and exit. Implies --nodaemon. --delay=N Makes the daemon sleep for N minutes before starting the first cycle. This would happen on the daemon startup and also after each configuration recompilation. For example, when monitor and collector start simultaneously, the collector needs some time to retrieve the data being monitored. --debug Sets the log level to debug. --verbose Sets the debug level to info. --help Displays a help message. FILES
/etc/torrus/conf/torrus-siteconfig.pl Torrus site configuration script. /var/log/torrus/monitor.TREENAME.log Monitor's log for the tree TREENAME. SEE ALSO
torrus(8) NOTES
See more documentation at Torrus home page: http://torrus.org AUTHOR
Stanislav Sinyagin <ssinyagin@yahoo.com> torrus 2.03 2013-07-26 TORRUS_MONITOR(8)
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