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Report free disk space (POSIX)
df [-ghknP] [device|directory|file]*
Neutrino
- -g
- Display all
statvfs()
information.
- -h
- Display the sizes in a “human-readable” form, using
bytes, KB, MB, or GB as the units.
- -k
- Use 1024-byte units (the default is 512-byte).
- -n
- Display the filesystem mountpoints and types only.
- -P
- Display headings for the columns. (Output conforms to POSIX 1003.2/5.8.6.1 format.)
The df utility displays the amount of free disk space
for the given devices, directories, and files.
|
By default, df reports its figures in 512-byte units.
If you specify the -k option, it uses 1024-byte units;
if you specify -h, it uses bytes.
Any block counts reported by the filesystem
are rounded into 512- or 1024-byte units, and df always
rounds down (i.e. to reflect whole blocks available).
For a filesystem that doesn't use native 512-byte (or multiples thereof)
blocks, this will result in round-off errors. |
Display the sizes in 512-byte units:
$ df -P
Filesystem 512-blocks Used Available Capacity Mounted on
/dev/hd0t178 37190440 4378680 32811760 12% /
/dev/hd0t177 122881088 4198452 118682636 4% /fs/hd0-qnx6-2/
/dev/cd0 0 0 0 100% (/fs/cd0/)
/dev/hd0 160086528 160086528 0 100%
Display the sizes in 1024-byte units:
$ df -kP
Filesystem 1024-blocks Used Available Capacity Mounted on
/dev/hd0t178 18595220 2189340 16405880 12% /
/dev/hd0t177 61440544 2099226 59341318 4% /fs/hd0-qnx6-2/
/dev/cd0 0 0 0 100% (/fs/cd0/)
/dev/hd0 80043264 80043264 0 100%
Display the sizes in bytes:
$ df -hP
Filesystem Size Used Available Capacity Mounted on
/dev/hd0t178 18G 2.0G 16G 12% /
/dev/hd0t177 59G 2.0G 57G 4% /fs/hd0-qnx6-2/
/dev/cd0 0 0 0 100% (/fs/cd0/)
/dev/hd0 76G 76G 0 100%
statvfs()
in the QNX Neutrino Library Reference
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