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- DU(1L) DU(1L)
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- NAME
- du - summarize disk usage
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- SYNOPSIS
- du [-abcklsxDLS] [--all] [--total] [--count-links] [--sum-
- marize] [--bytes] [--kilobytes] [--one-file-system]
- [--separate-dirs] [--dereference] [--dereference-args]
- [--help] [--version] [path...]
-
- DESCRIPTION
- This manual page documents the GNU version of du. du dis-
- plays the amount of disk space used by each argument and
- for each subdirectory of directory arguments. The space
- is measured in 1K blocks by default, unless the environ-
- ment variable POSIXLY_CORRECT is set, in which case
- 512-byte blocks are used.
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- OPTIONS
- -a, --all
- Display counts for all files, not just directories.
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- -b, --bytes
- Print sizes in bytes.
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- -c, --total
- Write a grand total of all of the arguments after
- all arguments have been processed. This can be
- used to find out the disk usage of a directory,
- with some files excluded.
-
- -k, --kilobytes
- Print sizes in kilobytes. This overrides the envi-
- ronment variable POSIXLY_CORRECT.
-
- -l, --count-links
- Count the size of all files, even if they have
- appeared already in another hard link.
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- -s, --summarize
- Display only a total for each argument.
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- -x, --one-file-system
- Skip directories that are on different filesystems
- from the one that the argument being processed is
- on.
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- -D, --dereference-args
- Dereference symbolic links that are command line
- arguments. Does not affect other symbolic links.
- This is helpful for finding out the disk usage of
- directories like /usr/tmp where they are symbolic
- links.
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- FSF GNU File Utilities 1
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- DU(1L) DU(1L)
-
-
- -L, --dereference
- Dereference symbolic links (show the disk space
- used by the file or directory that the link points
- to instead of the space used by the link).
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- -S, --separate-dirs
- Count the size of each directory separately, not
- including the sizes of subdirectories.
-
- --help Print a usage message and exit with a non-zero sta-
- tus.
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- --version
- Print version information on standard error then
- exit.
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- BUGS
- On BSD systems, du reports sizes that are half the correct
- values for files that are NFS-mounted from HP-UX systems.
- On HP-UX systems, it reports sizes that are twice the cor-
- rect values for files that are NFS-mounted from BSD sys-
- tems. This is due to a flaw in HP-UX; it also affects the
- HP-UX du program.
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- FSF GNU File Utilities 2
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