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Top Forums Shell Programming and Scripting Searching for a string in a log file with little movement Post 302408015 by Moxy on Saturday 27th of March 2010 04:22:40 PM
Old 03-27-2010
Searching for a string in a log file with little movement

I have a script which tails a log file and if it finds certain strings in the data tailed it sends an email, basically like this:

Code:
tail -f logfile > tmp.file &
sleep 10
kill $!
STRING=$(grep -c "string" tmp.file)

[ $STRING -gt 2 ] && echo $STRING | mailx -s "Warning.." admin@123.com

When the string is found I sleep the script for 15mins in order to suppress duplicate alerts.. but sometimes nothing is written to the error log in hours so tail -f will find the same string again when the script reruns.

Anyone have a way around this, basically i want to search for the string only if there is activity in the error log.
 

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mtailrc(5)							   User Manuals 							mtailrc(5)

NAME
mtailrc - Configuration file for monkeytail DESCRIPTION
A monkeytail configuration uses Apache-style syntax to declare "groups" of files to be tailed. Best explained with an example: <group testgroup> prefix 'server2: ' sudo yes <file> filename /var/log/apache2/access.log prefix 'server1: ' host server1.example.com </file> <file> filename /var/log/apache2/access.log host server2.example.com sudo no </file> </group> OPTIONS
All options can be either put inside a group or file block. Options inside a file block override those in the group block. filename filename filename defines the filename for this block. host remote-host (optional) host defines that this block's file is to be tailed on a remote server. sudo yes|no|1|0 sudo is a boolean specifying whether this file should be tailed as root. This option is supported for both local and remote files (in both cases you will potentially be prompted for your password). prefix "string: " prefix allows you to specify a short string that will be prepended to every line that is displayed for that given file. FILES
~/.mtailrc - user specific monkeytail config SEE ALSO
mtail(1), tail(1) AUTHOR
Martyn Smith <martyn@dollyfish.net.nz> mtail May 2008 mtailrc(5)
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