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40 lines
1.6 KiB
Plaintext
40 lines
1.6 KiB
Plaintext
.\" Copyright (C) 1994, 95, 96, 97, 98 Free Software Foundation, Inc.
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.\"
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.\" Permission is granted to make and distribute verbatim copies of this
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.\" manual provided the copyright notice and this permission notice are
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.\" preserved on all copies.
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.\"
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.\" Permission is granted to copy and distribute modified versions of
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.\" this manual under the conditions for verbatim copying, provided that
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.\" the entire resulting derived work is distributed under the terms of a
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.\" permission notice identical to this one.
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.\"
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.\" Permission is granted to copy and distribute translations of this
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.\" manual into another language, under the above conditions for modified
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.\" versions, except that this permission notice may be stated in a
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.\" translation approved by the Foundation.
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.\"
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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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