Shell script to scan size of directories and email when too big

Question

I am at work right now, and my superiors asked me to write/find a shell script for the Red hat Server edition that checks a folder size, and if it's above a certain limit, it will send an email.Can anyone here help me find or help me create a script like that??

I thank you in advance,

Jayakrishnan T

Answer 1

Are you already running Nagios?

Check out check_dirsize or check_filesize_dir:

http://exchange.nagios.org/directory/Plugins/Uncategorized/Operating-Systems/Linux/CheckDirSize/details

http://exchange.nagios.org/directory/Plugins/Uncategorized/Operating-Systems/Linux/check_filesize_dir/details

Both could be easily adapted to run out of cron if you like.

Answer 2

#!/bin/bash
DIR=/path/to/dir
SIZE=10000
MAILADDR="mail@domain.com"
if [ $(du -s $DIR | awk '{print $1}') -gt $SIZE ]; then
    echo "$DIR" | mail -s "Directory limit exceeded in $DIR" $MAILADDR
fi

SIZE has to be given in Bytes!

Answer 3

I would think that inotifywait(1) from inotify-tools would be helpful here.