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Top Forums Shell Programming and Scripting Email alerts whenever someone logs into server via SSH any user? Post 302568777 by ahamed101 on Friday 28th of October 2011 08:00:03 AM
Old 10-28-2011
Like this?
Code:
while true; 
do   
  who > /tmp/user.$$;   
  val=$(diff /tmp/user.log /tmp/user.$$);   
  test ! -z "$val" && echo -e "$val" | mail you@you.com
  mv /tmp/user.$$ /tmp/user.log;   
  sleep 10
done

--ahamed

---------- Post updated at 05:00 AM ---------- Previous update was at 04:58 AM ----------

You can differentiate the user logged in/logged out using the > or < from the diff command output. I am not sure if there is a utility already exists for this.

--ahamed
 

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HOBBIT-MAILACK(8)					      System Manager's Manual						 HOBBIT-MAILACK(8)

NAME
hobbit-mailack - permit acknowledging alerts via e-mail SYNOPSIS
hobbit-mailack --env=FILENAME [--debug] DESCRIPTION
hobbit-mailack normally runs as an input mail-filter for the hobbit user, e.g. by being called from the xymon users' procmailrc(5) file. hobbit-mailack recognizes e-mails that are replies to hobbitd_alert(8) mail alerts, and converts the reply mail into an acknowledge message that is sent to the Xymon system. This permits an administrator to acknowledge an alert via e-mail. ADDING INFORMATION TO THE REPLY MAIL
By default, an acknowledgment is valid for 1 hour. If you know in advance that solving the problem is going to take longer, you can change this by adding delay=DURATION to the subject of your mail reply or on a line in the reply message. Duration is in minutes, unless you add a trailing 'h' (for 'hours'), 'd' (for 'days') or 'w' (for 'weeks'). You can also include a message that will show up on the status-page together with the acknowledgment, e.g. to provide an explanation for the issue or some other information to the users. You can either put it at the end of the subject line as msg=Some random text, or you can just enter it in the e-mail as the first non-blank line of text in the mail (a "delay=N" line is ignored when looking for the message text). USE WITH PROCMAIL
To setup hobbit-mailack, create a .procmailrc file in the xymon-users home-directory with the following contents: DEFAULT=$HOME/Mailbox LOGFILE=$HOME/procmail.log :0 | $HOME/server/bin/hobbit-mailack --env=$HOME/server/etc/hobbitserver.cfg USE WITH QMAIL
If you are using Qmail to deliver mail locally, you can run hobbit-mailack directly from a .qmail file. Setup the xymon-users .qmail file like this: | $HOME/server/bin/hobbit-mailack --env=$HOME/server/etc/hobbitserver.cfg OPTIONS
--env=FILENAME Load environment from FILENAME, usually hobbitserver.cfg. --debug Dont send a message to hobbitd, but dump the message to stdout. SEE ALSO
hobbitd_alert(8), hobbitd(8), xymon(7) Xymon Version 4.2.3: 4 Feb 2009 HOBBIT-MAILACK(8)
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