Show disk space usage

'du' command

show total (-s summarized) disk usage of current directory

du -hs

show total disk usage for each directory

du -hs *

show total disk usage for each subdirectory in directory Data/

du -hs Data/*

-s to summarize disk usage of each directory (and single files) in MyDirectory/

-h to print sizes in human readable format (3K 21M 2G)

'*' to expand all files in MyDirectory/ as individual argument for du

show top 20 biggest diretories (including subdirectories)

du -m | sort -nr | head -20