Интерактивная система просмотра системных руководств (man-ов)
df (1)
df (1) ( Solaris man: Команды и прикладные программы пользовательского уровня )
>> df (1) ( FreeBSD man: Команды и прикладные программы пользовательского уровня )
df (1) ( Русские man: Команды и прикладные программы пользовательского уровня )
df (1) ( Linux man: Команды и прикладные программы пользовательского уровня )
df (1) ( POSIX man: Команды и прикладные программы пользовательского уровня )
BSD mandoc
NAME
df
- display free disk space
SYNOPSIS
[-b | g | H | h | k | m | P
]
[-aciln
]
[-t type
]
[file | filesystem ...
]
DESCRIPTION
The
utility
displays statistics about the amount of free disk space on the specified
file system
or on the file system of which
file
is a part.
Values are displayed in 512-byte per block counts.
If neither a file or a file system operand is specified,
statistics for all mounted file systems are displayed
(subject to the
-t
option below).
The following options are available:
-a
Show all mount points, including those that were mounted with the
MNT_IGNORE
flag.
-b
Use 512-byte blocks rather than the default.
Note that
this overrides the
BLOCKSIZE
specification from the environment.
-c
Display a grand total.
-g
Use 1073741824-byte (1-Gbyte) blocks rather than the default.
Note that
this overrides the
BLOCKSIZE
specification from the environment.
-H
"Human-readable" output.
Use unit suffixes: Byte, Kilobyte, Megabyte,
Gigabyte, Terabyte and Petabyte in order to reduce the number of
digits to four or fewer using base 10 for sizes.
-h
"Human-readable" output.
Use unit suffixes: Byte, Kilobyte, Megabyte,
Gigabyte, Terabyte and Petabyte in order to reduce the number of
digits to four or fewer using base 2 for sizes.
-i
Include statistics on the number of free inodes.
-k
Use 1024-byte (1-Kbyte) blocks rather than the default.
Note that
this overrides the
BLOCKSIZE
specification from the environment.
-l
Only display information about locally-mounted file systems.
-m
Use 1048576-byte (1-Mbyte) blocks rather than the default.
Note that
this overrides the
BLOCKSIZE
specification from the environment.
-n
Print out the previously obtained statistics from the file systems.
This option should be used if it is possible that one or more
file systems are in a state such that they will not be able to provide
statistics without a long delay.
When this option is specified,
will not request new statistics from the file systems, but will respond
with the possibly stale statistics that were previously obtained.
-P
Use POSIX compliant output of 512-byte blocks rather than the default.
Note that this overrides the
BLOCKSIZE
specification from the environment.
-t
Only print out statistics for file systems of the specified types.
More than one type may be specified in a comma separated list.
The list of file system types can be prefixed with
``no''
to specify the file system types for which action should
not
be taken.
For example, the
command:
df -t nonfs,nullfs
lists all file systems except those of type
NFS
and
NULLFS
The
lsvfs(1)
command can be used to find out the types of file systems
that are available on the system.
ENVIRONMENT
BLOCKSIZE
If the environment variable
BLOCKSIZE
is set, the block counts will be displayed in units of that size block.
The
-n
flag is ignored if a file or file system is specified.
Also, if a mount
point is not accessible by the user, it is possible that the file system
information could be stale.
