df — report file system disk space usage
df [OPTION...] [FILE...]
This manual page documents the GNU version of df. df displays the amount of disk space available on the file system containing each file name argument. If no file name is given, the space available on all currently mounted file systems 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.
If an argument is the absolute file name of a disk device node containing a mounted file system, df shows the space available on that file system rather than on the file system containing the device node (which is always the root file system). This version of df cannot show the space available on unmounted file systems, because on most kinds of systems doing so requires very nonportable intimate knowledge of file system structures.
Show information about the file system on which each FILE resides, or all file systems by default.
Mandatory arguments to long options are mandatory for short options too.
−a, −−allinclude dummy file systems
−B, −−block−size=SIZEuse SIZE−byte blocks
−h, −−human−readableprint sizes in human readable format (e.g., 1K 234M 2G)
−H, −−silikewise, but use powers of 1000 not 1024
−i, −−inodeslist inode information instead of block usage
−klike −−block−size=1K
−l, −−locallimit listing to local file systems
−−no−syncdo not invoke sync before getting usage info (default)
−P, −−portabilityuse the POSIX output format
−−syncinvoke sync before getting usage info
−t, −−type=TYPElimit listing to file systems of type TYPE
−T, −−print−typeprint file system type
−x, −−exclude−type=TYPElimit listing to file systems not of type TYPE
−v(ignored)
−−helpdisplay this help and exit
−−versionoutput 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.
The full documentation for df is maintained as a Texinfo manual. If the info and df programs are properly installed at your site, the command
info df
should give you access to the complete manual.
| COPYRIGHT |
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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. |