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Shell Programming and Scripting
9 
#!/usr/bin/ksh
#----subtract 15 minutes (900 seconds) from time
STAMP=$(perl -e '($ss, $mm, $hh, $DD, $MM, $YY) = localtime(time() - 900);
printf "%04d%02d%02d%02d%02d", $YY + 1900, $MM + 1, $DD, $hh, $mm')

#----create an empty file with a timestamp of 15 minutes ago
touch $STAMP /tmp/flagfile

#----find newer files
find /start/dir -type f -name '*.out' -newer /tmp/flagfile -print |\
while read FILE
do
  #----search the file for the word "error"
  if grep -q "error" $FILE
  then
    echo $FILE found, send an email to a data center operator
  fi
done