df查看磁盘信息

  • Z时代
  • 2024-01-10
  • 分类：综合

编程

[root@CentOS7 ~]# df --help
Usage: df [OPTION]... [FILE]...
Show information about the file system on which each FILE resides,
or all file systems by default.
Mandatory arguments to long options are mandatory for short options too.
  -a, --all             include dummy file systems # 包含虚拟文件系统
  -B, --block-size=SIZE  use SIZE-byte blocks
      --direct          show statistics for a file instead of mount point
      --total           produce a grand total
  -h, --human-readable  print sizes in human readable format (e.g., 1K 234M 2G) # 格式化容量信息，使用m,g等单位
  -H, --si              likewise, but use powers of 1000 not 1024 # 参数相同，但在计算时是以1000 Bytes为换算单位而非1024 Bytes
  -i, --inodes          list inode information instead of block usage # 展示inode信息
  -k                    like --block-size=1K
  -l, --local           limit listing to local file systems
      --no-sync         do not invoke sync before getting usage info (default)
  -P, --portability     use the POSIX output format # 使用POSIX的输出格式
      --sync            invoke sync before getting usage info
  -t, --type=TYPE       limit listing to file systems of type TYPE # 只展示指定文件系统类型的信息
  -T, --print-type      print file system type # 输出文件类型
  -x, --exclude-type=TYPE   limit listing to file systems not of type TYPE # 不展示指定文件系统类型的信息
  -v                    (ignored)
      --help     display this help and exit
      --version  output version information and exit
Display values are in units of the first available SIZE from --block-size,
and the DF_BLOCK_SIZE, BLOCK_SIZE and BLOCKSIZE environment variables.
Otherwise, units default to 1024 bytes (or 512 if POSIXLY_CORRECT is set).
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.
Report df bugs to bug-coreutils@gnu.org
GNU coreutils home page: <http://www.gnu.org/software/coreutils/>
General help using GNU software: <http://www.gnu.org/gethelp/>
For complete documentation, run: info coreutils "df invocation"

测试

# -h 测试
[root@CentOS7 ~]#  df -h
Filesystem               Size  Used Avail Use% Mounted on
/dev/mapper/centos-root   18G  1.6G   16G   9% /
devtmpfs                 479M     0  479M   0% /dev
tmpfs                    489M     0  489M   0% /dev/shm
tmpfs                    489M  6.7M  483M   2% /run
tmpfs                    489M     0  489M   0% /sys/fs/cgroup
/dev/sda1                497M  123M  375M  25% /boot
tmpfs                     98M     0   98M   0% /run/user/0
# -t 测试
[root@CentOS7 ~]# df -hTP -t xfs
Filesystem              Type  Size  Used Avail Use% Mounted on
/dev/mapper/centos-root xfs    18G  1.6G   16G   9% /
/dev/sda1               xfs   497M  123M  375M  25% /boot
# -x 测试
[root@CentOS7 ~]# df -hTP -x xfs
Filesystem     Type      Size  Used Avail Use% Mounted on
devtmpfs       devtmpfs  479M     0  479M   0% /dev
tmpfs          tmpfs     489M     0  489M   0% /dev/shm
tmpfs          tmpfs     489M  6.7M  483M   2% /run
tmpfs          tmpfs     489M     0  489M   0% /sys/fs/cgroup
tmpfs          tmpfs      98M     0   98M   0% /run/user/0
# -i 测试
[root@CentOS7 ~]# df -hi
Filesystem              Inodes IUsed IFree IUse% Mounted on
/dev/mapper/centos-root    18M   30K   18M    1% /
devtmpfs                  120K   382  120K    1% /dev
tmpfs                     123K     1  123K    1% /dev/shm
tmpfs                     123K   461  122K    1% /run
tmpfs                     123K    13  123K    1% /sys/fs/cgroup
/dev/sda1                 500K   330  500K    1% /boot
tmpfs                     123K     1  123K    1% /run/user/0
# -a 测试
[root@CentOS7 ~]# df -ha
Filesystem               Size  Used Avail Use% Mounted on
rootfs                      -     -     -    - /
sysfs                       0     0     0    - /sys
proc                        0     0     0    - /proc
devtmpfs                 479M     0  479M   0% /dev
securityfs                  0     0     0    - /sys/kernel/security
tmpfs                    489M     0  489M   0% /dev/shm
devpts                      0     0     0    - /dev/pts
tmpfs                    489M  6.7M  483M   2% /run
tmpfs                    489M     0  489M   0% /sys/fs/cgroup
cgroup                      0     0     0    - /sys/fs/cgroup/systemd
pstore                      0     0     0    - /sys/fs/pstore
cgroup                      0     0     0    - /sys/fs/cgroup/cpuset
cgroup                      0     0     0    - /sys/fs/cgroup/devices
cgroup                      0     0     0    - /sys/fs/cgroup/cpu,cpuacct
cgroup                      0     0     0    - /sys/fs/cgroup/memory
cgroup                      0     0     0    - /sys/fs/cgroup/freezer
cgroup                      0     0     0    - /sys/fs/cgroup/hugetlb
cgroup                      0     0     0    - /sys/fs/cgroup/perf_event
cgroup                      0     0     0    - /sys/fs/cgroup/blkio
cgroup                      0     0     0    - /sys/fs/cgroup/net_cls
configfs                    0     0     0    - /sys/kernel/config
/dev/mapper/centos-root   18G  1.6G   16G   9% /
systemd-1                   -     -     -    - /proc/sys/fs/binfmt_misc
mqueue                      0     0     0    - /dev/mqueue
hugetlbfs                   0     0     0    - /dev/hugepages
debugfs                     0     0     0    - /sys/kernel/debug
/dev/sda1                497M  123M  375M  25% /boot
binfmt_misc                 0     0     0    - /proc/sys/fs/binfmt_misc
tmpfs                     98M     0   98M   0% /run/user/0
# -P 测试
[root@CentOS7 ~]# df -hP
Filesystem               Size  Used Avail Use% Mounted on
/dev/mapper/centos-root   18G  1.6G   16G   9% /
devtmpfs                 479M     0  479M   0% /dev
tmpfs                    489M     0  489M   0% /dev/shm
tmpfs                    489M  6.7M  483M   2% /run
tmpfs                    489M     0  489M   0% /sys/fs/cgroup
/dev/sda1                497M  123M  375M  25% /boot
tmpfs                     98M     0   98M   0% /run/user/0

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