#!/bin/bash

# fquota--Disk quota analysis tool for Unix. 
#         Assumes that all user accounts are >= UID 100.

MAXDISKUSAGE=1 # in megabytes

for name in $(cut -d: -f1,3 /etc/passwd | awk -F: '$2 > 99 {print $1}')
do
  /bin/echo -n "User $name exceeds disk quota. Disk usage is: " 
  # You might need to modify the following list of directories to match
  #   the layout of your disk.  
  find / /usr /var /home -xdev -user $name -type f -ls | \
      awk '{ sum += $7 } END { print sum / (1024*1024) " Mbytes" }'

done | awk "\$9 > $MAXDISKUSAGE { print \$0 }"

exit 0