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Grep Question..

 
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Top Forums UNIX for Dummies Questions & Answers Grep Question..
# 8  
Old 06-10-2010
I got it!
Here is the working solution...

tail -f /var/log/ncolog | egrep -vi "autovac|closed|sucess|FTP LOGIN FROM|DNS_OK|cron"

Works perfectly..!

I now want to add a spin, so this basically keeps tailing the log "filtering the above" I want to add a statement to send me and alert via mail if the tail sees a specific message I have this so far.

Code:
/var/log/ncolog | egrep -vi "autovac|closed|sucess|FTP LOGIN FROM|DNS_OK|cron" > /tmp/checkdmesg.$$

HERE I am stuck .. as I want this to be in a loop "live" constantly checking the file .. or the tail..

then
   mailx -s "error type"  address < /tmp/checkdmesg.$$
fi
exit

Any advice, sorry pretty new but enjoying this quite a bit.

I was thinking of

creating a loop with a break which keeps re-scanning every 30 seconds "sleep 30" ..

and running the script over and over ?!

help with the script appreciated
 
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LEARN ABOUT REDHAT

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  is used to invoke the grep on compress'ed or gzip'ed files. All options specified are passed directly to grep.  If no file is speci-
       fied, 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  zgrep  is invoked as zegrep or zfgrep then egrep or fgrep is used instead of grep.  If the GREP environment variable is set, zgrep uses
       it as the grep program to be invoked. For example:

	   for sh:  GREP=fgrep	zgrep string files
	   for csh: (setenv GREP fgrep; zgrep string files)

AUTHOR

       Charles Levert (charles@comm.polymtl.ca)

SEE ALSO

       grep(1), egrep(1), fgrep(1), zdiff(1), zmore(1), znew(1), zforce(1), gzip(1), gzexe(1)

																	  ZGREP(1)