df

The df command displays information about total space and available space on a file system. You can specify the name of a device on which the file system is located, the directory on which the file system is mounted, or the relative path name of the file system. You can also specify a file or directory that is not a mount point, and the df command displays information for the file system on which the file or directory is located. If you just specify the command with no parameters, it displays information for all currently mounted file systems. File system statistics are displayed in units of 1024-byte blocks by default. The command can also display inodes usage instead of block usage. The output in human readable format (e.g., 1K 234M 2G) is available using -h flag.

To display information about all mounted file systems, enter:

df

The output from the df command can resembles this:

Filesystem               1K-blocks      Used  Available Use%  Mounted on
/dev/sda3                 20642428   8246984   11346868  43%  /
tmpfs                      1927132      9608    1917524   1%  /dev/shm
/dev/sda2                   495844     88293     381951  19%  /boot
/dev/sda7                445674536 111535892  311499644  27%  /home
/dev/mapper/tmp-sda6       4128448    139488    3779248   4%  /tmp
192.168.1.1:/ipm4r4-psfnc 51606272  17550080   31434752  36%  /ipm4r4-psfnc
192.168.1.1:/ipm4r4       51606272  17550080   31434752  36%  /ipm4r4