Linux du command man page

This page shows the contents of the Linux du comamnd man page. This du command output was created on a CentOS Linux system.

You can see this same du command man page output by entering this command on your own Linux system:

man du

Linux du command man page

DU(1)				 User Commands				 DU(1)



NAME
       du - estimate file space usage

SYNOPSIS
       du [OPTION]... [FILE]...
       du [OPTION]... --files0-from=F

DESCRIPTION
       Summarize disk usage of each FILE, recursively for directories.

       Mandatory  arguments  to	 long  options are mandatory for short options
       too.

       -a, --all
	      write counts for all files, not just directories

       --apparent-size
	      print apparent sizes,  rather  than  disk	 usage;	 although  the
	      apparent	size is usually smaller, it may be larger due to holes
	      in (‘sparse’) files, internal  fragmentation,  indirect  blocks,
	      and the like

       -B, --block-size=SIZE use SIZE-byte blocks

       -b, --bytes
	      equivalent to ‘--apparent-size --block-size=1’

       -c, --total
	      produce a grand total

       -D, --dereference-args
	      dereference FILEs that are symbolic links

       --files0-from=F
	      summarize	 disk usage of the NUL-terminated file names specified
	      in file F

       -H     like --si, but also evokes a warning; will  soon	change	to  be
	      equivalent to --dereference-args (-D)

       -h, --human-readable
	      print sizes in human readable format (e.g., 1K 234M 2G)

       --si   like -h, but use powers of 1000 not 1024

       -k     like --block-size=1K

       -l, --count-links
	      count sizes many times if hard linked

       -m     like --block-size=1M

       -L, --dereference
	      dereference all symbolic links

       -P, --no-dereference
	      don’t follow any symbolic links (this is the default)

       -0, --null
	      end each output line with 0 byte rather than newline

       -S, --separate-dirs
	      do not include size of subdirectories

       -s, --summarize
	      display only a total for each argument

       -x, --one-file-system
	      skip directories on different file systems

       -X FILE, --exclude-from=FILE
	      Exclude files that match any pattern in FILE.

       --exclude=PATTERN Exclude files that match PATTERN.

       --max-depth=N
	      print the total for a directory (or file, with --all) only if it
	      is  N  or	 fewer	levels	below  the  command   line   argument;
	      --max-depth=0 is the same as --summarize

       --time show time of the last modification of any file in the directory,
	      or any of its subdirectories

       --time=WORD
	      show time as WORD instead of modification time:  atime,  access,
	      use, ctime or status

       --time-style=STYLE show times using style STYLE:
	      full-iso,	 long-iso,  iso,  +FORMAT  FORMAT  is interpreted like
	      ‘date’

       --help display this help and exit

       --version
	      output version information and exit

       SIZE may be (or may be an integer optionally followed by) one  of  fol-
       lowing: kB 1000, K 1024, MB 1000*1000, M 1024*1024, and so on for G, T,
       P, E, Z, Y.

PATTERNS
       PATTERN is a shell pattern (not a regular expression).  The  pattern  ?
       matches	any  one  character, whereas * matches any string (composed of
       zero, one or multiple characters).  For example,	 *.o  will  match  any
       files whose names end in .o.  Therefore, the command

	      du --exclude=’*.o’

       will skip all files and subdirectories ending in .o (including the file
       .o itself).

AUTHOR
       Written by Torbjorn Granlund, David MacKenzie,  Paul  Eggert,  and  Jim
       Meyering.

SEE ALSO
       The full documentation for du is maintained as a	 Texinfo  manual.   If
       the  info and du programs are properly installed at your site, the com-
       mand

	      info du

       should give you access to the complete manual.

du 5.97				 January 2009				 DU(1)

This du command man page is included here so we can reference it directly from other du command tutorials.