Shell Programming and Scripting

Hi,

I have a unix shell script that I use to run the jobs, which internally calls a number of other jobs and outputs a log file. I want to call another shell script in the main script that constantly reads the log file that gets appended and emails the user upon each job completion.

for example.

Job A runs and calls
process 1
process 2
process 3
process 4.

it keeps writing to a log file and writes process 1 start....process 2 start....process 3 start...
i want to create a while loop which constantly reads the log file and emails the user as soon as it sees a new process started.

Hope I am clear.

thanks

what have you tried?

This is where I am at

#!/bin/bash -x

if [[ -n "$1" ]] ; then
mailx -s "Session Passed is $1" email@yahoo.com </dev/null;

while read /data/log_file.txt;
do


done

else
echo "No session is passed"
fi

exit

You could find the following command useful:

Code:

tail -f log_file | script_handling_job_completions &

Hi,
sorry for dummy question,

why doesn't work this simple script

#!bin/ksh
while read LINE
do
echo "new line inserted"
done < `tail -1f file.log`

I'd like to check my file.log continuously. Can you suggest the correct way?

Thank.

make small change in that..

Code:

tail -1f file.log|
while read LINE
do
echo "new line inserted $LINE"
done