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1. Name

du - estimate file space usage

2. Synopsis

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

3. Description

Summarize disk usage of each FILE, recursively for directories.

Mandatory arguments to long options are mandatory for shortoptions 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 thelike
-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 only symlinks that are listed on the command line
--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.

4. 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).

5. Author

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

6. Reporting Bugs

Report bugs to <This email address is being protected from spambots. You need JavaScript enabled to view it. >. Copyright © 2008 Free Software Foundation, Inc. License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html >
This is free software: you are free to change and redistribute it. There is NO WARRANTY, to the extent permitted by law.

8. See Also

The full documentation for du is maintained as a Texinfo manual. If the infoand du programs are properly installed at your site, the command
info du

should give you access to the completemanual.

 


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