du - stands for disk usage.
it’s available on mac and linux by default.
You can use du to find out how big files are especially when identifying files that are consuming a lot of disk space.
manpage
man du
show the subdirectory sizes
du directory/
show everything including files
du -a directory/
formatted output of subdirectory sizes
du -h directory/
show the subdirectory sizes in kbs
du -k directory/
show the subdirectory sizes in mbs
du -m directory/
show all subdirectories + files sizes
du -ha directory/
get the total size of the directory
du -ch directory/ | grep total
Getting the sub-directories disk size from smallest to largest
du -h --max-depth=1 | sort -hr
exclude a particular file type with –exclude
--exclude='*.fileext'