If you notice that a file system on your server is filling up, you can search for files that are consuming the most space.
If for example /var is a separate file system and is filling up, you can run a find command like this:
find /var -xdev -mtime -10 -size +1024k | xargs du -sk | sort -nr -k 1,1 | head -30
The command above will look in /var for files that were modified or created in the last 10 days that are larger than 1 MB, It will then determine the file size with du and sort it displaying the top 30 largest files in descending order.
