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Full Discussion: Monitor a file and send mail
Top Forums Shell Programming and Scripting Monitor a file and send mail Post 303017046 by proactiveaditya on Tuesday 8th of May 2018 11:36:56 AM
Old 05-08-2018
Monitor a file and send mail
I want to monitor the maillog file in real time and send a mail when a certain grep condition is met. Every time the grep condition is met a mail will be sent. I wish to ignore all grep conditions 30 mins after each mail and thereafter continue monitoring.

For example:
  1. Condition is met, mail is sent
  2. 30 mins no mail even if condition is met.
  3. After 30 mins again condition is met and a mail is triggered.
  4. Again for next 30 mins no mail even if condition is met.

and so on.

I am doing the following:

Code:
tail -F -n0 /var/log/maillog | \
 grep -v --line-buffered 'status=sent' | \
 grep --line-buffered -v 'relay=local' | \
 grep --line-buffered 'relay=' | \
 while read line
 do
    echo "$line" | \
    mail -s Test mail@group.com
 done

Now i am not sure how to prevent mail sending 30 mins after the event is triggered.
Last edited by rbatte1; 05-10-2018 at 08:22 AM.. Reason: Formatted numbered list with LIST=1 tags and broke up one huge line to make it more readable.
 

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LEARN ABOUT DEBIAN

claws-mail-extra-plugins

CLAWS-MAIL-EXTRA-PLUGINS(1)				      General Commands Manual				       CLAWS-MAIL-EXTRA-PLUGINS(1)

NAME

       claws-mail-extra-plugins -- Claws Mail extra plugins meta package.

DESCRIPTION

       claws-mail-extra-plugins is a meta package for installing all extra plugins for the Claws Mail mailer.

       See below for the corresponding manpages of each installed plugin.

SEE ALSO

       claws-mail-acpi-notifier  (1),  claws-mail-attach-remover  (1), claws-mail-cache-saver (1), claws-mail-etpan-privacy (1), claws-mail-feeds-
       reader (1), claws-mail-fetchinfo-plugin (1), claws-mail-html2-viewer (1), claws-mail-maildir-plugin  (1),  claws-mail-mailmbox-plugin  (1),
       claws-mail-multi-notifier  (1),	claws-mail-newmail-plugin (1), claws-mail-perl-filter (1), claws-mail-smime-plugin (1), claws-mail-vcalen-
       dar-plugin (1), claws-mail-synce-plugin (1), claws-mail-attach-warner (1), claws-mail (1).

	       http://www.claws-mail.org/plugins.php (link to URL http://www.claws-mail.org/plugins.php)

AUTHOR

       This manual page was written by Ricardo Mones mones@debian.org for the Debian system (but may be used by others). Permission is granted	to
       copy,  distribute  and/or  modify this document under the terms of the GNU General Public License, Version 2 any later version published by
       the Free Software Foundation.

       On Debian systems, the complete text of the GNU General Public License can be found in /usr/share/common-licenses/GPL.

														       CLAWS-MAIL-EXTRA-PLUGINS(1)
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