Track down server disk space hogs

root_dir_size.sh

# Get the size of all the directories in the root sorted by size (MB)
du -sm /* | sort -n

# To exclude the /home directory (or other partitions not included in the space calculations) use --exclude=/home/
du -sm /* --exclude=/home/ | sort -n

# Drill down to the offending directories
# These are normally
# /var/log
# /var/lib/mysql
# /usr/local/cpanel