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Full Discussion: Shell script to tail a file with unknown numbers
Top Forums UNIX for Beginners Questions & Answers Shell script to tail a file with unknown numbers Post 303038782 by gull04 on Friday 13th of September 2019 06:42:45 AM
Old 09-13-2019
Hi,

You would just use somethin like this, but choose your logic to suit the most likely condition.

Code:
if [[ `grep "encrypt" /tmp/log.g` != "0" ]]
then
exit 0
else
mailx -s "Message Title." user@domain < /tmp/log.g
fi

You may want to build in checking or rotation on the logfile to ensure that you dont get the same notification time after time, this could be scripted to run as a cron job.

Regards

Gull04
 

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LEARN ABOUT LINUX

motd.tail

MOTD.TAIL(5)						   Debian Administrator's Manual					      MOTD.TAIL(5)

NAME

       motd.tail - Template for building the system message of the day

DESCRIPTION

       On Debian systems, the system message of the day is rebuilt at each startup, in order to display an accurate information. /etc/motd.tail is
       the file to edit permanent changes to the message of the day.

OVERVIEW

       The initiation script /etc/init.d/bootmisc.sh prepends a line containing information about the system  to  /etc/motd.tail  and  stores  the
       resulting  file in /var/run/motd. /etc/motd is a symbolic link to /var/run/motd.  This is done to prevent changes to /etc as the system can
       not assume /etc to be writable.

       Changes to /etc/motd effectively end up in a file under /var/run which will be regenerated upon reboot.

       A symbolic link to a different file, such as /etc/motd.static disables this behaviour.

FILES

       /etc/init.d/bootmisc.sh
	      The initiation script which builds /var/run/motd

       /etc/motd
	      Symbolic link to the system message of the day at /var/run/motd

       /etc/motd.tail
	      Template for building the system message of the day

       /var/run/motd
	      System message of the day file rebuilt at each computer start

SEE ALSO

       login(1), issue(5), motd(5).

Debian								    2007-04-28							      MOTD.TAIL(5)
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