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- DF(1L) DF(1L)
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- NNAAMMEE
- df - summarize free disk space
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- SSYYNNOOPPSSIISS
- ddff [-aikPv] [-t fstype] [-x fstype] [--all] [--inodes]
- [--type=fstype] [--exclude-type=fstype] [--kilobytes]
- [--portability] [--help] [--version] [path...]
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- DDEESSCCRRIIPPTTIIOONN
- This manual page documents the GNU version of ddff. ddff dis-
- plays the amount of disk space available on the filesystem
- containing each argument pathname. If no pathnames are
- given, the space available on all currently mounted
- filesystems is shown. Disk space is shown in 1K blocks by
- default, unless the environment variable POSIXLY_CORRECT
- is set, in which case 512-byte blocks are used.
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- If an argument is the full pathname of a disk device node
- containing a mounted filesystem, ddff shows the space avail-
- able on that filesystem rather than on the filesystem con-
- taining the device node (which is always the root filesys-
- tem). This version of ddff cannot show the space available
- on unmounted filesystems, because on most kinds of systems
- doing so requires very nonportable intimate knowledge of
- filesystem structures.
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- OOPPTTIIOONNSS
- _-_a_, _-_-_a_l_l
- Include in the listing filesystems that have 0
- blocks, which are omitted by default. Such
- filesystems are typically special-purpose pseudo-
- filesystems, such as automounter entries. On some
- systems, filesystems of type ``ignore'' or ``auto''
- are also omitted by default and included in the
- listing by this option.
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- _-_i_, _-_-_i_n_o_d_e_s
- List inode usage information instead of block
- usage. An inode (short for ``index node'') is a
- special kind of disk block that contains informa-
- tion about a file, such as its owner, permissions,
- timestamps, and location on the disk.
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- _-_k_, _-_-_k_i_l_o_b_y_t_e_s
- Print sizes in 1K blocks instead of 512-byte
- blocks. This overrides the environment variable
- POSIXLY_CORRECT.
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- _-_P_, _-_-_p_o_r_t_a_b_i_l_i_t_y
- Use the POSIX output format. This is like the
- default format except that the information about
- each filesystem is always printed on exactly one
- line; a mount device is never put on a line by
- itself. This means that if the mount device name
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- FSF GNU File Utilities 1
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- DF(1L) DF(1L)
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- is more than 20 characters long (as for some net-
- work mounts), the columns are misaligned.
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- _-_t_, _-_-_t_y_p_e_=_f_s_t_y_p_e
- Limit the listing to filesystems of type _f_s_t_y_p_e.
- Multiple filesystem types can be shown by giving
- multiple _-_t options. By default, all filesystem
- types are listed.
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- _-_x_, _-_-_e_x_c_l_u_d_e_-_t_y_p_e_=_f_s_t_y_p_e
- Limit the listing to filesystems not of type
- _f_s_t_y_p_e. Multiple filesystem types can be elimi-
- nated by giving multiple _-_x options. By default,
- all filesystem types are listed.
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- _-_v Ignored; for compatibility with System V versions
- of ddff.
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- _-_-_h_e_l_p Print a usage message and exit with a non-zero sta-
- tus.
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- _-_-_v_e_r_s_i_o_n
- Print version information on standard error then
- exit.
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- FSF GNU File Utilities 2
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