icon Top 9 categories map      RocketAware >


Tips: Browse or Search all pages for efficient awareness of more than 6000 of the most popular reusable and open source applications, functions, libraries, and FAQs.

The "RKT couplings" below include links to source code, updates, additional information, advice, FAQs, and overviews.


Search all pages


By activity
Professions, Sciences, Humanities, Business, ...

User Interface
Text-based, GUI, Audio, Video, Keyboards, Mouse, Images,...

Text Strings
Conversions, tests, processing, manipulation,...

Integer, Floating point, Matrix, Statistics, Boolean, ...

Algorithms, Memory, Process control, Debugging, ...

Stored Data
Data storage, Integrity, Encryption, Compression, ...

Networks, protocols, Interprocess, Remote, Client Server, ...

Hard World
Timing, Calendar and Clock, Audio, Video, Printer, Controls...

File System
Management, Filtering, File & Directory access, Viewers, ...


RocketLink!--> Man page versions: OpenBSD FreeBSD NetBSD RedHat Others

DU(1)                      OpenBSD Reference Manual                      DU(1)

     du - display disk usage statistics

     du [-H | -L | -P] [-a | -s] [-ckrx] [file ...]

     The du utility displays the file system block usage for each file argu-
     ment and for each directory in the file hierarchy rooted in each directo-
     ry argument.  Note that the system block usage is usually greater than
     the actual size of the file.  If no file is specified, the block usage of
     the hierarchy rooted in the current directory is displayed.

     The options are as follows:

     -H      Symbolic links on the command line are followed.  (Symbolic links
             encountered in the tree traversal are not followed.)

     -L      All symbolic links are followed.

     -P      No symbolic links are followed.

     -a      Display an entry for each file in the file hierarchy.

     -k      By default, du displays the number of blocks as returned by the
             stat(2) system call, i.e. 512-byte blocks.  If the -k flag is
             specified, the number displayed is the number of 1024-byte
             blocks.  Partial numbers of blocks are rounded up.

     -c      Display the grand total after all the arguments have been pro-

     -s      Display only the grand total for the specified files.

     -r      Generate messages about directories that cannot be read, files
             that cannot be opened, and so on.  This is the default case.
             This option exists solely for conformance with X/Open Portability
             Guide Issue 4 (``XPG4'').

     -x      Filesystem mount points are not traversed.

     du counts the storage used by symbolic links and not the files they ref-
     erence unless the -H or -L option is specified.  If either the -H or -L
     options are specified, storage used by any symbolic links which are fol-
     lowed is not counted or displayed.  The -H, -L and -P options override
     each other and the command's actions are determined by the last one spec-

     Files having multiple hard links are counted (and displayed) a single
     time per du execution.

     BLOCKSIZE  If the environment variable BLOCKSIZE is set, and the -k op-
                tion is not specified, the block counts will be displayed in
                units of that size block.

     df(1),  fts(3),  symlink(7),  quot(8)

     A du command appeared in Version 6 AT&T UNIX.

OpenBSD 2.6                     October 4, 1996                              1

Source: OpenBSD 2.6 man pages. Copyright: Portions are copyrighted by BERKELEY
SOFTWARE DESIGN, INC., The Regents of the University of California, Massachusetts
Institute of Technology, Free Software Foundation, FreeBSD Inc., and others.

(Corrections, notes, and links courtesy of RocketAware.com)

[Detailed Topics]
FreeBSD Sources for du(1)
OpenBSD sources for du(1)

[Overview Topics]

Up to: File System Information - Obtaining information of the filesystem as a whole. Status of disk subsystems, capacity, etc.

RocketLink!--> Man page versions: OpenBSD FreeBSD NetBSD RedHat Others

Rapid-Links: Search | About | Comments | Submit Path: RocketAware > du.1/
RocketAware.com is a service of Mib Software
Copyright 1999, Forrest J. Cavalier III. All Rights Reserved.
We welcome submissions and comments