Linux disk usage by folder code example

Example 1: linux how to know whhich directory used more soace

$ du -h --max-depth=1 | sort -hr

Example 2: linux check used space in folder

du -h --max-depth=1

Example 3: linux disk usage

#sudo apt-get install ncdu
sudo ncdu -rx / 
# -r = read-only
# -x = do not traverse mounts

Example 4: du command linux usage

Ubuntu DU for file:
du -h --human-readable <fileName>

Ubuntu DU for directory:
du -a --all <dir>