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- DU(1L) DU(1L)
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- N✓NA✓AM✓ME✓E
- du - summarize disk usage
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- S✓SY✓YN✓NO✓OP✓PS✓SI✓IS✓S
- d✓du✓u [-abcklsxDLS] [--all] [--total] [--count-links] [--sum-
- marize] [--bytes] [--kilobytes] [--one-file-system]
- [--separate-dirs] [--dereference] [--dereference-args]
- [--help] [--version] [path...]
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- D✓DE✓ES✓SC✓CR✓RI✓IP✓PT✓TI✓IO✓ON✓N
- This manual page documents the GNU version of d✓du✓u. d✓du✓u 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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- O✓OP✓PT✓TI✓IO✓ON✓NS✓S
- _✓-_✓a_✓, _✓-_✓-_✓a_✓l_✓l
- Display counts for all files, not just directories.
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- _✓-_✓b_✓, _✓-_✓-_✓b_✓y_✓t_✓e_✓s
- Print sizes in bytes.
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- _✓-_✓c_✓, _✓-_✓-_✓t_✓o_✓t_✓a_✓l
- 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.
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- _✓-_✓k_✓, _✓-_✓-_✓k_✓i_✓l_✓o_✓b_✓y_✓t_✓e_✓s
- Print sizes in kilobytes. This overrides the envi-
- ronment variable POSIXLY_CORRECT.
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- _✓-_✓l_✓, _✓-_✓-_✓c_✓o_✓u_✓n_✓t_✓-_✓l_✓i_✓n_✓k_✓s
- Count the size of all files, even if they have
- appeared already in another hard link.
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- _✓-_✓s_✓, _✓-_✓-_✓s_✓u_✓m_✓m_✓a_✓r_✓i_✓z_✓e
- Display only a total for each argument.
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- _✓-_✓x_✓, _✓-_✓-_✓o_✓n_✓e_✓-_✓f_✓i_✓l_✓e_✓-_✓s_✓y_✓s_✓t_✓e_✓m
- Skip directories that are on different filesystems
- from the one that the argument being processed is
- on.
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- _✓-_✓D_✓, _✓-_✓-_✓d_✓e_✓r_✓e_✓f_✓e_✓r_✓e_✓n_✓c_✓e_✓-_✓a_✓r_✓g_✓s
- 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)
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- _✓-_✓L_✓, _✓-_✓-_✓d_✓e_✓r_✓e_✓f_✓e_✓r_✓e_✓n_✓c_✓e
- 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_✓, _✓-_✓-_✓s_✓e_✓p_✓a_✓r_✓a_✓t_✓e_✓-_✓d_✓i_✓r_✓s
- Count the size of each directory separately, not
- including the sizes of subdirectories.
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- _✓-_✓-_✓h_✓e_✓l_✓p Print a usage message on standard output and exit
- successfully.
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- _✓-_✓-_✓v_✓e_✓r_✓s_✓i_✓o_✓n
- Print version information on standard output then
- exit successfully.
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- B✓BU✓UG✓GS✓S
- On BSD systems, d✓du✓u 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 d✓du✓u program.
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- FSF GNU File Utilities 2
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