Last week I encountered problem that how to get a notification when carbon server throws an error during a long running test or in a production environment. Tailing the log is not practical during these kinds of situations, so I google and found a interesting solution. First you have to install Mailutils package $ sudo apt-get install mailutils Create a file called "notify.sh" and paste the following code in to it. #!/bin/bash EMAILADDRESS="yourmail@gmail.com" EMAILSUBJECT="[Important][CARBON] ERROR OCCURRED" MESSAGEBODY="../repository/logs/errors.txt" cat /dev/null > $MESSAGEBODY SEARCHSTRING='ERROR\|Error\|error\|Exception' SYSLOG=../repository/logs/wso2carbon.log LASTOCCURANCE=`grep -n "$SEARCHSTRING" $SYSLOG | tail -1` LASTLINE=`echo $LASTOCCURANCE | cut -d':' -f1` while true do END=`wc -l $SYSLOG | cut -d' ' -f1` if [ $END -lt $LASTLINE ] then LASTLINE=$END fi tail -n +$LASTLINE $SYSLOG