NAME

du − display the number of disk blocks used per directory or file

SYNOPSIS

/usr/ucb/du [ −F ufs ]

/usr/ucb/du [ −F ufs ] [ −a ] [ −s ] [ filename ... ]

DESCRIPTION

du gives the number of kilobytes contained in all files and, recursively, directories within each specified directory or file filename. If filename is missing, ‘.’ (the current directory) is used. 

A file which has multiple links to it is only counted once. 

OPTIONS

−a Generate an entry for each file. 

−s Only display the grand total for each of the specified filenames.

Entries are generated only for each directory in the absence of options. 

EXAMPLE

Here is an example of using du in a directory.  We used the pwd(1) command to identify the directory, then used du to show the usage of all the subdirectories in that directory.  The grand total for the directory is the last entry in the display:

% pwd
/usr/ralph/misc
% du
5./jokes
33./squash
44./tech.papers/lpr.document
217./tech.papers/new.manager
401./tech.papers
144./memos
80./letters
388./window
93./messages
15./useful.news
1211.
%

SEE ALSO

df(1M), pwd(1), quot(1M)

NOTES

Filename arguments that are not directory names are ignored, unless you use −a. 

If there are too many distinct linked files, du will count the excess files more than once. 

  —  BSD Compatibility Package