If any file resides for more than an hour in this directory then to raise an alert

Shell Programming and Scripting
1

Hi
If there is a file upload done from a remote server
and if the file remains without being extracted for more than an hour,
I need to identify the files and create an alert message to the
users in the other end.
please help me writing a shell script for it.

Regards
Yazhini

2

You'll need to come up with your own way of determining if it's been extracted or not (or provide more details as to what changes in the file or filename).

I can help with some pseudo code for the rest though:

period=300 # 5 mins
threshold=3600 # 1 hour
now=`date +%Y%m%d%H%M%S`
while true
do
  for file in <your test for the presence of unprocessed files>
  do
    difference=$now - `<get $file mtime>`
    if [ $difference -ge $threshold ]
    then
      <raise an alarm for $file being $difference old>
    fi
  done
done
3

If you have perl, this script will find all files not modified in the last hour...

#!/usr/bin/ksh

function file_hours {
    perl -e 'printf "%i\n", 24*(-M shift);' -- $1
}

cd wherever

for file in *
do
    if [[ $(file_hours $file) -ge 1 ]]
    then
        echo $file is old
    else
        echo $file is new
    fi
done