The df command reports the system's disk space
usage. If you type the command df at a shell prompt,
the output looks similar to the following:
Filesystem 1K-blocks Used Available Use% Mounted on
/dev/mapper/VolGroup00-LogVol00
11675568 6272120 4810348 57% /
/dev/sda1 100691 9281 86211 10% /boot
none 322856 0 322856 0% /dev/shm |
By default, this utility shows the partition size in 1 kilobyte blocks
and the amount of used and available disk space in kilobytes. To view
the information in megabytes and gigabytes, use the command df
-h. The -h argument stands for
human-readable format. The output looks similar to the following:
Filesystem Size Used Avail Use% Mounted on
/dev/mapper/VolGroup00-LogVol00
12G 6.0G 4.6G 57% /
/dev/sda1 99M 9.1M 85M 10% /boot
none 316M 0 316M 0% /dev/shm |
In the list of mounted partitions, there is an entry for
/dev/shm. This entry represents the system's
virtual memory file system.
The du command displays the estimated amount of space
being used by files in a directory. If you type du at
a shell prompt, the disk usage for each of the subdirectories is
displayed in a list. The grand total for the current directory and
subdirectories are also shown as the last line in the list. If you
do not want to see the totals for all the subdirectories, use the command du
-hs to see only the grand total for the directory in
human-readable format. Use the du --help command to
see more options.
To view the system's partitions and disk space usage in a graphical
format, use the GNOME System Monitor tab as shown in
Figure 40-2, on the bottom of the tab under
Devices.
