Usage
du takes a single argument, specifying a pathname for du to work; if it is not specified, the current directory is used. The SUS mandates for du the following options:
- -a, display an entry for each file (and not directory) contained in the current directory
- -d, display an entry for sum of the usage of each directory (and not file) contained in the current directory
- -H, calculate disk usage for link references specified on the command line
- -k, show sizes as multiples of 1024 bytes, not 512-byte
- -L, calculate disk usage for link references anywhere
- -s, report only the sum of the usage in the current directory, not for each file
- -x, only traverse files and directories on the device on which the pathname argument is specified.
Other Unix and Unix-like operating systems may add extra options. For example, BSD and GNU du specify a -h option, displaying disk usage in a format easier to read by the user, adding units with the appropriate SI prefix (e.g. 10 MB).
Read more about this topic: Du (Unix)
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