http://www.cyberciti.biz/faq/how-do-i-find-the-largest-filesdirectories-on-a-linuxunixbsd-filesystem/ du -hsx * | sort -rh | head -5
du -hsx * | sort -rh | head -10
du -hsx * | sort -rh >/tmp/out.txt
for i in G M K; do du -ah | grep [0-9]$i | sort -nr -k 1; done | head -n 11
du --max-depth=1 -h | sort -rh | head -5