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Top Forums Shell Programming and Scripting Searching for a string in a log file with little movement Post 302408028 by EAGL€ on Saturday 27th of March 2010 06:30:29 PM
Old 03-27-2010
Hi moxy,

i'm not sure if its what exactly you want but try it, then tell us if it works or not, i couldnt test my code:

Code:
occ=`grep -c "string" logfile`

num_of_occ=`awk -v pattern="string" -v last="$occ" 
'$0~pattern{i++} i==last{print NR;exit}' logfile`

sleep 900

occ_=`grep -c "string" logfile`

num_of_last_occ=`awk -v pattern="string" -v lastocc="$occ_2" 
'$0~pattern{i++} i==lastocc{print NR;exit}' logfile`

if [ $num_of_occ -lt $num_of_last_occ ]; then mailx -s "WARNING!" admin@123.com

Actually only "grep -c" could be enough too Smilie

Code:
occ=`grep -c "string" logfile`

sleep 900

occ_=`grep -c "string" logfile`

if [ occ -lt occ_ ]; then mailx -s "WARNING!" admin@123.com


Last edited by EAGL€; 03-27-2010 at 07:43 PM..
 

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ZGREP(1)						      General Commands Manual							  ZGREP(1)

NAME
zgrep - search possibly compressed files for a regular expression SYNOPSIS
zgrep [ grep_options ] [ -e ] pattern filename... DESCRIPTION
Zgrep invokes grep on compressed or gzipped files. These grep options will cause zgrep to terminate with an error code: (-[drRzZ]|--di*|--exc*|--inc*|--rec*|--nu*). All other options specified are passed directly to grep. If no file is specified, then the standard input is decompressed if necessary and fed to grep. Otherwise the given files are uncompressed if necessary and fed to grep. If the GREP environment variable is set, zgrep uses it as the grep program to be invoked. EXIT CODE
2 - An option that is not supported was specified. AUTHOR
Charles Levert (charles@comm.polymtl.ca) SEE ALSO
grep(1), gzexe(1), gzip(1), zdiff(1), zforce(1), zmore(1), znew(1) ZGREP(1)
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