UNIX for Dummies Questions & Answers

time=$(ls -l $1 | awk -F" "  '{ print $7 }')
while :
do
   chk_time=$(ls -l $1 | awk -F" "  '{ print $7 }')
   if [ "$chk_time" != "$time" ]
   then
      echo "File modified"
      mailx -s "File $1 modified"  abc.dfg@xxx.com
      break; # if you want to stop the script once mail is send
   fi
   sleep 5  # 5sec wait time
done

#!/bin/bash

USAGE="$0 <full-path-of-filename> <email-addresses..>"

if ! [ -e $1 ]; then
   echo $USAGE
   exit 1
fi

file=$1
dir=$(dirname $1)
timestampFile=$1-watching
shift
emails=$@

# if the timestamp file does not yet exist, create it
if ! [ -e $timestampFile ]; then
   touch -r $file $timestampFile
   echo " You will be notified within the hour that $file is modified " | mailx -s "kiowa feed watch: $(basename $file)" $emails
   exit 0
fi

timestamp=$(date -r $timestampFile)
nowstamp=$(date -r $file)
if [[ "$timestamp" == "$nowstamp" ]]; then
   exit 0
else
   echo "$file changed timestamps from  $timestamp  to  $nowstamp"| mailx -s "kiowa feed watch: $(basename $file) *** ALERT ***" $emails
   touch -r $file $timestampFile
fi