Measuring disc usage

• Caution: different from file size!

• du -h <file> (disk usage) -h: returns size on disk of the given file, in human readable format: K (kilobytes), M (megabytes) or G (gigabytes), . Without -h, du returns the raw number of disk blocks used by the file (hard to read). Note that the -h option only exists in GNU du.

• du -sh <dir> -s: returns the sum of disk usage of all the files in the given directory.