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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 303017072 by Chubler_XL on Tuesday 8th of May 2018 06:42:04 PM
Old 05-08-2018
How about we remember where we are upto in the maillog and only print new stuff.
That way we can sleep for 30mins and the resume checking:

Code:
UPTO=0
MAILFILE=/var/log/maillog
while [ -f "$MAILFILE" ]
do
    FSZ=$(wc -l < "$MAILFILE")

    if [ $FSZ -lt $UPTO ]
    then
        # File has shrunk!
        # most likely been truncated - start from beginning again.
        UPTO=0
    fi

    found=$( awk -v START=$UPTO -v FINISH=$FSZ '
       NR <= START || NR > FINISH { next }
       /status=sent/ || /relay=local/ { next }
       /relay=/ { print }' "$MAILFILE" )

    if [ -z "$found" ]
    then
       # Wait for a minute for maillog to grow a bit
       sleep 60
    else
       echo "$found" | mail -s Test mail@group.com

       # No more emails for 30mins
       sleep 1800

       # If you don't want to be notified about any other
       # occurances within this 30min period uncomment below
       # FSZ=$(wc -l /var/log/"$MAILFILE")
    fi
    UPTO=$FSZ
done

 

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LEARN ABOUT OPENSOLARIS

grablogs.conf

grablogs.conf(4)						   File Formats 						  grablogs.conf(4)

NAME

       grablogs.conf - grablogs configuration for libgrablogs.so of the plugins of
	gnome-system-log file

SYNOPSIS

       /usr/lib/gnome-system-log/plugins/grablogs.conf

DESCRIPTION

       The  libgrablogs.so  is	a plugin for gnome-system-log(1), it colloct the log files from the system as many as possible. grablogs.conf is a
       configuration file that contains a set of lines mixed with sh(1) syntax codes and individual
	log files. libgrablogs.so will read the file try to get a log files list for
	gnome-system-log(1). Users can copy the file into $HOME/.gnome2/gnome-system-log/plugins/`uname -p` to overwrite the system default one.

       The grablogs.conf file contains the following configuration categories:

	      [configs]
		     Each line under this category is interpreted as a config file of System. The plugin will open the config file and try to find
		     all system paths of the logs.

	      [commands]
		     Each line under this category is interpreted as a shell command and will be execute through a pipe. And each line of the out-
		     put of the command will be interpreted as a log path.

	      [logs] Each line under this category is interpreted as a log path.

FILES

       /usr/lib/gnome-system-log/plugins/grablogs.conf
	      The system default configuration file for the plugin libgrablogs.so

       $HOME/.gnome2/gnome-system-log/plugins/`uname -p`/grablogs.conf
	      The user specific configuration file for the plugin libgrablogs.so

EMAMPLE

       [configs]
       /etc/syslog.conf
       [commands]
       for i in `svcs -aH -o FMRI | grep -v lrc `; do svcprop -p restarter/logfile $i  2>/dev/null  ||	svcprop  -q  -p  restarter/alt_logfile	$i
       2>/dev/null ; done
       [logs]
       /var/log/messages
       /var/log/secure
       /var/log/maillog
       /var/log/cron
       /var/log/Xorg.0.log
       /var/log/XFree86.0.log
       /var/log/auth.log
       /var/log/cups/error_log

SEE ALSO

       gnome-system-log(1), pipelog.conf(1)

gnome-utils 2.16.0						    13 Oct 2006 						  grablogs.conf(4)
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