df 中文man頁面
名字
df - 報告文件系統(tǒng)磁盤空間的使用情況
總覽
df [OPTION]... [FILE]...
POSIX 選項: [-kP]
GNU 選項 (最短方式): [-ahHiklmPv] [-t fstype] [-x fstype] [--block-size=size] [--print-type] [--no-sync] [--sync] [--help] [--version] [--]
描述
此手冊頁文檔是df的GNU版本. df命令列出指定的每一個文件名所在的文件系統(tǒng)上可用磁盤空間的數(shù)量。如果沒有指定文件名,則顯示當前所有使用中的文件系統(tǒng).缺省設置時, 磁盤空間以1K為一塊顯示,如果環(huán)境變量POSIXLY_CORRECT已設置,則采用512字節(jié)為一塊顯示. 如果參數(shù)是一個包含已使用文件系統(tǒng)的磁盤設備名, df命令顯示出的是該文件系統(tǒng)的可用空間,而非包含設備結(jié)點的文件系統(tǒng)(只能是根文件系統(tǒng)).此版本的df不能顯示未使用文件系統(tǒng)的可用空間,這是由于大多數(shù)系統(tǒng)在響應這樣的請求時必須很清楚該文件系統(tǒng)的結(jié)構(gòu).
GNU 參數(shù)說明
- -a, --all
- 列出包括BLOCK為0的文件系統(tǒng)
- --block-size=SIZE use SIZE-byte blocks
- 指定塊的大小
- -h,--huma-readable
- 用常見的格式顯示出大小(例如:1K 234M 2G)
- -H,--si
- 同上,但是這里的1k等于1000字節(jié)而不是1024字節(jié)
- -i, --inodes
- 用信息索引點代替塊表示使用狀況
- -k, --kilobytes
- 指定塊大小等于1024字節(jié)來顯示使用狀況
- -l, --local
- 只顯示本地文件系統(tǒng)使用狀況
- -m, --megabytes
- 以指定塊大小等于1048576字節(jié)(1M)來顯示使用狀況
- --no-sync
- 在取得使用信息前禁止調(diào)用同步 (default)
- -P, --portability
- 使用POSIX格式輸出
- --sync
- 在取得使用信息前調(diào)用同步
- -t, --type=TYPE
- 只顯示指定類型(TYPE)的文件系統(tǒng)
- -T, --print-type
- 輸出每個文件系統(tǒng)的類型
- -x, --exclude-type=TYPE
- 只顯示指定類型(TYPE)之外的文件系統(tǒng).
- -v (忽略)
- --
- 輸出該命令的幫助信息并退出
- --version
- 輸出版本信息并退出
作者
由 Torbjorn Granlund, David MacKenzie, Larry McVoy, 和 Paul Eggert 寫作．
#p#
NAME
df - report filesystem disk space usage
SYNOPSIS
df [OPTION]... [FILE]...
DESCRIPTION
This manual page documents the GNU version of df. df displays the amount of disk space available on the filesystem containing each file name argument. If no file name is given, the space available on all currently mounted filesystems is shown. Disk space is shown in 1K blocks by default, unless the environment variable POSIXLY_CORRECT is set, in which case 512-byte blocks are used.
If an argument is the absolute file name of a disk device node containing a mounted filesystem, df shows the space available on that filesystem rather than on the filesystem containing the device node (which is always the root filesystem). This version of df cannot show the space available on unmounted filesystems, because on most kinds of systems doing so requires very nonportable intimate knowledge of filesystem structures.
OPTIONS
Show information about the filesystem on which each FILE resides, or all filesystems by default.
Mandatory arguments to long options are mandatory for short options too.
- -a, --all
- include filesystems having 0 blocks
- -B, --block-size=SIZE use SIZE-byte blocks
- -h, --human-readable
- print sizes in human readable format (e.g., 1K 234M 2G)
- -H, --si
- likewise, but use powers of 1000 not 1024
- -i, --inodes
- list inode information instead of block usage
- -k
- like --block-size=1K
- -l, --local
- limit listing to local filesystems
- --no-sync
- do not invoke sync before getting usage info (default)
- -P, --portability
- use the POSIX output format
- --sync
- invoke sync before getting usage info
- -t, --type=TYPE
- limit listing to filesystems of type TYPE
- -T, --print-type
- print filesystem type
- -x, --exclude-type=TYPE
- limit listing to filesystems not of type TYPE
- -v
- (ignored)
- --help
- display this help and exit
- --version
- output version information and exit
SIZE may be (or may be an integer optionally followed by) one of following: kB 1000, K 1024, MB 1000*1000, M 1024*1024, and so on for G, T, P, E, Z, Y.
AUTHOR
Written by Torbjorn Granlund, David MacKenzie, and Paul Eggert.
REPORTING BUGS
Report bugs to <bug-coreutils@gnu.org>.
COPYRIGHT
Copyright © 2004 Free Software Foundation, Inc.
This is free software; see the source for copying conditions. There is NO warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
SEE ALSO
The full documentation for df is maintained as a Texinfo manual. If the info and df programs are properly installed at your site, the command
- info coreutils df
should give you access to the complete manual.
