script to grep latest outofmemory string from the logs
I have requirement to prepare script which will grep for latest outofmemory message from the logs. I have used following command to grep the string from the logs,this script is not effective when logs are not getting updated as it will grep for old message.
Code:
f=catalina.out
var=`tail -10 $f | grep -i outofmemory | sed -n '$p' | sed -n -e "s/.*\(OutOfMemoryError\).*/\1/p"`
I need improvement in the above command in such a way that it should always grepped for latest outofmmeory message even if logs are not updating. can anyone help me on this?
Moderator's Comments:
Having so many posts already, you should be familiar using code tags - you got PM with a guide.
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Discussion started by: Sanjeev G
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LEARN ABOUT XFREE86
zgrep
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)
12-16-2010
