Large files linux

df -h shows hard drive space

sudo du -a /dir/ | sort -n -r | head -n 20

this will list larger files/folders in /dir

find / -type f -size +20000k -exec ls -lh {} \; 2> /dev/null | awk '{ print $NF ": " $5 }' | sort -nrk 2,2

this will find files larger than 20000k