#!/bin/bash
#
# Script to delete specific file older than N minutes.
# OLDERTHAN="40" #40 minutes
 
FOLDER="home/optima/pids/"
ls -1d "${FOLDER}"/*.pid 2>/dev/null | while read PID
do
OLDERTHAN="40"
if [ -e ${FOLDER}/${PID} ]
then
     ls_time=`ls -l ${FOLDER}/$PID`
     pid_h=`echo $ls_time | cut -d' ' -f8 | cut -d\: -f1`
     pid_m=`echo $ls_time | cut -d' ' -f8 | cut -d\: -f2`
     echo pid time=$pid_h:$pid_m
     let pid_time=(10#$pid_h*60)+10#$pid_m
     curr_h=`date | cut -d' ' -f4 | cut -d\: -f1`
     curr_m=`date | cut -d' ' -f4 | cut -d\: -f2`
     let curr_time=(10#$curr_h*60)+10#$curr_m
     echo curr_time=`date | cut -d' ' -f4`
     let diff=10#$curr_time-10#$pid_time
     #echo pid_time=$pid_time
     #echo curr_time=$curr_time
     echo diff=$diff minutes
     if [ $diff -ge $OLDERTHAN ]
     then
          echo "${PID} is older than $OLDERTHAN minutes"
          echo "Deleting ${PID}..."
          # Remove echo when thoroughly tested
          echo rm -f ${FOLDER}/${PID}
     else
          echo -e "${PID} is not older than $OLDERTHAN minutes"
     fi
else
     echo -e "${PID} not found."
fi
done

 
find /home/somefolder/pids -maxdepth 1 -type f -name "*.pid" -amin +40 -exec rm {} \;