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Full Discussion: Can we trigger an shell script on an event
Top Forums UNIX for Dummies Questions & Answers Can we trigger an shell script on an event Post 302247723 by joeyg on Thursday 16th of October 2008 09:24:22 AM
Old 10-16-2008
Hammer & Screwdriver
If you have no control of the process that writes to the log file, one approach would be the following:

a) Create a script to determine if something has happened to the log file. You might look at the last modification date/time or the number of lines in the log file.
b) This script will need to save what it last knew (to a file probably) for comparison.
c) Will need to setup this script as a cron job - running as often as you believe necessary. Do you need to know the second a log entry is made, or is hourly sufficient? The more precise you need to know, the more computer resources will be taken to determine it.
d) When script found a new entry, create your email message and use mailx or mutt or other email to send notification.
 

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LEARN ABOUT SUSE

writelog

WRITELOG(8)						      System Manager's Manual						       WRITELOG(8)

NAME

       writelog - add a entry to an INN log file.

SYNOPSIS

       writelog name text...

DESCRIPTION

       The writelog script is used to write a log entry or send it as mail.  The name parameter specifies the name of the log file where the entry
       should be written.  If it is the word ``mail'' then the entry is mailed to the  news  administrator,  <USER specified with --with-news-mas-
       ter at configure>.  The data that is written or sent consists of the text given on the command line, followed by standard input indented by
       four spaces.  Shlock(1) is used to avoid simultaneous updates to a single log file.

HISTORY

       Written by Landon Curt Noll <chongo@toad.com>  and  Rich  $alz  <rsalz@uunet.uu.net>  for  InterNetNews.   This	is  revision  5909,  dated
       2002-12-03.

SEE ALSO

       innd(8), innstat(8), news.daily(8), newslog(5), nnrpd(8), scanlogs(8).

																       WRITELOG(8)
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