Question

I am calling another shell script testarg.sh within my main script.
the logfiles of testarg.sh are stored in $CUSTLOGS in the below format

testarg.DDMONYY.PID.log
example: testarg.09Jun10.21165.log

In the main script after the testarg process gets completed i need to grep the log file for the text “ERROR” and “COMPLETED SUCCESSFULLY”.
How do i get the PID of the process and combine with DDMONYY for grepping. Also i need to check whether file
exists before grepping

$CUSTBIN/testarg.sh

$CUSTBIN/testarg.sh
rc=$?
if [ $rc -ne 0 ]; then
          return $CODE_WARN
fi

Answer 1

You may background testarg.sh, which puts its pid into $!, and then wait for it:

#! /bin/bash
...

$CUSTBIN/testarg.sh &

LOGFILE=testarg.$(date +%d%b%y).$!.log       # testarg.09Jun10.12345.log

wait $!

# ... $? is set as you expect ...

[ -f $LOGFILE ] && grep {pattern} $LOGFILE

...