Linux常用命令-df

发表于 分类于

命令

df

描述

report file system disk space usage
显示文件系统磁盘空间使用情况

用法

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df [OPTION]... [FILE]...

选项

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Options:
  -a, --all             显示所有文件系统
  -B, --block-size=SIZE 指定块大小,如-BM即1,048,576 bytes
      --total           显示汇总信息
  -h, --human-readable  以可读形式显示,单位1024,如1K,234M,2G
  -H, --si              以可读形式显示,单位1000
  -i, --inodes          显示inode使用率
  -k                    等同于--block-size=1K
  -l, --local           只显示本地文件系统
  --output[=FIELD_LIST] 显示指定输出格式
  -t, --type=TYPE       显示指定类型的文件系统,如xfs,ext4
  -T, --print-type      显示文件系统类型
  -x, --exclude-type=TYPE   排除指定类型的文件系统

SIZE: K, M, G, T, P, E, Z, Y (powers of 1024) or KB, MB, ... (powers of 1000).

FIELD_LIST: 'source', 'fstype', 'itotal', 'iused', 'iavail', 'ipcent',
'size', 'used', 'avail', 'pcent', 'file' and 'target'.

注意

无

示例

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$ df
Filesystem              1K-blocks    Used Available Use% Mounted on
devtmpfs                  1002056       0   1002056   0% /dev
tmpfs                     1013948       0   1013948   0% /dev/shm
tmpfs                     1013948    9676   1004272   1% /run
tmpfs                     1013948       0   1013948   0% /sys/fs/cgroup
/dev/mapper/centos-root  17811456 1777872  16033584  10% /
/dev/sda1                 1038336  171572    866764  17% /boot
tmpfs                      202792       0    202792   0% /run/user/0
# -BM以M为单位显示
$ df -BM
Filesystem              1M-blocks  Used Available Use% Mounted on
devtmpfs                     979M    0M      979M   0% /dev
tmpfs                        991M    0M      991M   0% /dev/shm
tmpfs                        991M   10M      981M   1% /run
tmpfs                        991M    0M      991M   0% /sys/fs/cgroup
/dev/mapper/centos-root    17394M 1737M    15658M  10% /
/dev/sda1                   1014M  168M      847M  17% /boot
tmpfs                        199M    0M      199M   0% /run/user/0
# -h以可读形式显示,单位1024
$ df -h --total 
Filesystem               Size  Used Avail Use% Mounted on
devtmpfs                 979M     0  979M   0% /dev
tmpfs                    991M     0  991M   0% /dev/shm
tmpfs                    991M  9.5M  981M   1% /run
tmpfs                    991M     0  991M   0% /sys/fs/cgroup
/dev/mapper/centos-root   17G  1.7G   16G  10% /
/dev/sda1               1014M  168M  847M  17% /boot
tmpfs                    199M     0  199M   0% /run/user/0
total                     23G  1.9G   21G   9% -
# -H以可读形式显示,单位1000
$ df -H
Filesystem               Size  Used Avail Use% Mounted on
devtmpfs                 1.1G     0  1.1G   0% /dev
tmpfs                    1.1G     0  1.1G   0% /dev/shm
tmpfs                    1.1G   10M  1.1G   1% /run
tmpfs                    1.1G     0  1.1G   0% /sys/fs/cgroup
/dev/mapper/centos-root   19G  1.9G   17G  10% /
/dev/sda1                1.1G  176M  888M  17% /boot
tmpfs                    208M     0  208M   0% /run/user/0
# -i显示inode使用率
$ df -i
Filesystem               Inodes IUsed   IFree IUse% Mounted on
devtmpfs                 250514   334  250180    1% /dev
tmpfs                    253487     1  253486    1% /dev/shm
tmpfs                    253487   674  252813    1% /run
tmpfs                    253487    16  253471    1% /sys/fs/cgroup
/dev/mapper/centos-root 8910848 43156 8867692    1% /
/dev/sda1                524288   332  523956    1% /boot
tmpfs                    253487     1  253486    1% /run/user/0
# 显示指定列
$ df --output=source,fstype,pcent,target
Filesystem              Type     Use% Mounted on
devtmpfs                devtmpfs   0% /dev
tmpfs                   tmpfs      0% /dev/shm
tmpfs                   tmpfs      1% /run
tmpfs                   tmpfs      0% /sys/fs/cgroup
/dev/mapper/centos-root xfs       10% /
/dev/sda1               xfs       17% /boot
tmpfs                   tmpfs      0% /run/user/0
# -t显示指定文件系统
$ df -t xfs
Filesystem              1K-blocks    Used Available Use% Mounted on
/dev/mapper/centos-root  17811456 1777872  16033584  10% /
/dev/sda1                 1038336  171572    866764  17% /boot
# -T显示文件系统
$ df -T
Filesystem              Type     1K-blocks    Used Available Use% Mounted on
devtmpfs                devtmpfs   1002056       0   1002056   0% /dev
tmpfs                   tmpfs      1013948       0   1013948   0% /dev/shm
tmpfs                   tmpfs      1013948    9676   1004272   1% /run
tmpfs                   tmpfs      1013948       0   1013948   0% /sys/fs/cgroup
/dev/mapper/centos-root xfs       17811456 1777872  16033584  10% /
/dev/sda1               xfs        1038336  171572    866764  17% /boot
tmpfs                   tmpfs       202792       0    202792   0% /run/user/0
# -x排除tmpfs文件系统
$ df -x tmpfs
Filesystem              1K-blocks    Used Available Use% Mounted on
devtmpfs                  1002056       0   1002056   0% /dev
/dev/mapper/centos-root  17811456 1777872  16033584  10% /
/dev/sda1                 1038336  171572    866764  17% /boot
# -Th常用选项
$ df -Th
Filesystem              Type      Size  Used Avail Use% Mounted on
devtmpfs                devtmpfs  979M     0  979M   0% /dev
tmpfs                   tmpfs     991M     0  991M   0% /dev/shm
tmpfs                   tmpfs     991M  9.5M  981M   1% /run
tmpfs                   tmpfs     991M     0  991M   0% /sys/fs/cgroup
/dev/mapper/centos-root xfs        17G  1.7G   16G  10% /
/dev/sda1               xfs      1014M  168M  847M  17% /boot
tmpfs                   tmpfs     199M     0  199M   0% /run/user/0
# 显示指定分区
$ df -Th /dev/sda1
Filesystem     Type  Size  Used Avail Use% Mounted on
/dev/sda1      xfs  1014M  168M  847M  17% /boot
$ df -Th /dev/mapper/centos-root 
Filesystem              Type  Size  Used Avail Use% Mounted on
/dev/mapper/centos-root xfs    17G  1.7G   16G  10% /