2021-01-01 16:36:09 +00:00
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'\" Copyright (C) 1998-2021 Free Software Foundation, Inc.
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2006-08-17 19:58:17 +00:00
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'\"
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'\" This is free software. You may redistribute copies of it under the terms
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2017-09-19 01:13:23 -07:00
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'\" of the GNU General Public License <https://www.gnu.org/licenses/gpl.html>.
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2006-08-17 19:58:17 +00:00
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'\" There is NO WARRANTY, to the extent permitted by law.
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1999-11-02 13:51:42 +00:00
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[NAME]
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2004-06-30 22:15:59 +00:00
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df \- report file system disk space usage
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1998-09-12 20:12:55 +00:00
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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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2004-06-30 22:15:59 +00:00
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displays the amount of disk space available on the file system
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1998-09-12 20:12:55 +00:00
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containing each file name argument. If no file name is given, the
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2004-06-30 22:15:59 +00:00
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space available on all currently mounted file systems is shown. Disk
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1998-09-12 20:12:55 +00:00
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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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2004-06-30 22:15:59 +00:00
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mounted file system,
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1998-09-12 20:12:55 +00:00
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.B df
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2004-06-30 22:15:59 +00:00
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shows the space available on that file system rather than on the
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2013-06-27 12:32:45 +01:00
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file system containing the device node. This version of
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1998-09-12 20:12:55 +00:00
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.B df
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2004-06-30 22:15:59 +00:00
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cannot show the space available on unmounted file systems, because on
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1998-09-12 20:12:55 +00:00
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most kinds of systems doing so requires very nonportable intimate
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2004-06-30 22:15:59 +00:00
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knowledge of file system structures.
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1998-09-12 20:12:55 +00:00
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.SH OPTIONS
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