df
QNX SDP8.0Utilities ReferenceUtilities
Report free disk space (POSIX)
Syntax:
df [-ghknP] [device|directory|file]*
Runs on:
QNX OS
Options:
- -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 the POSIX 1003.2/5.8.6.1 format.)
Description:
The df utility displays the amount of free disk space for the given devices, directories, and files.
Note:
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.
Examples:
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%
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