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26 lines
910 B
Plaintext
26 lines
910 B
Plaintext
[NAME]
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df \- report filesystem disk space usage
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[DESCRIPTION]
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This manual page
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documents the GNU version of
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.BR df .
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.B df
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displays the amount of disk space available on the filesystem
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containing each file name argument. If no file name is given, the
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space available on all currently mounted filesystems is shown. Disk
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space is shown in 1K blocks by default, unless the environment
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variable POSIXLY_CORRECT is set, in which case 512-byte blocks are
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used.
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.PP
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If an argument is the absolute file name of a disk device node containing a
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mounted filesystem,
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.B df
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shows the space available on that filesystem rather than on the
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filesystem containing the device node (which is always the root
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filesystem). This version of
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.B df
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cannot show the space available on unmounted filesystems, because on
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most kinds of systems doing so requires very nonportable intimate
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knowledge of filesystem structures.
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.SH OPTIONS
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