Tutorials Point


  Unix for Beginners
  Unix Shell Programming
  Advanced Unix
  Unix Useful References
  Unix Useful Resources
  Selected Reading

Copyright © 2014 by tutorialspoint



  Home     References     Discussion Forums     About TP  

du - Unix, Linux Command


previous next AddThis Social Bookmark Button


Advertisements

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.

TagDescription
-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 following: 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
TagDescription
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.

REPORTING BUGS

Report bugs to <bug-coreutils@gnu.org>.

COPYRIGHT

Copyright © 2006 Free Software Foundation, Inc.
This is free software. You may redistribute copies of it under the terms of the GNU General Public License <http://www.gnu.org/licenses/gpl.html>. There is NO WARRANTY, to the extent permitted by law.

SEE ALSO

du is maintained as a Texinfo manual. If the info and du programs are properly installed at your site, the command
TagDescription
info du
should give you access to the complete manual.

previous next Printer Friendly

Advertisements


  

Advertisements