Find/Search the big/large files/folders on Linux

Find BIGGEST folders

cd /where-to-find/
for i in G M K; do du -h | grep [0-9]$i | sort -nr -k 1; done | head -n 11

Find BIGGEST files

cd /where-to-find/
ls -laR | sort -nr +4 -5 | head

Find BIGGEST files
Warning: only works with GNU find

cd /where-to-find/
find . -printf '%s %p\n'| sort -nr | head -10