Disk Usage Using the DF command
From TheLinuxVault
Sometimes, you may need to find the exact amount of disk usage for individual disks. This can be cumbersome using a file manager, but there is a great command line utility to help you do it.
To use this command, the syntax is as follows:
df (-a -B -h -H -i -k -l -P -t -T) [device]
There are lots of different options for this command:
-a Lists all of the filesystems, even "dummy" filesystems
-B Define the block size (expert option)
-h Print the size in a human readable format
-H Print the size in the SI format
-i Define the inode size (expert option)
-k Define block size as 1K (expert option)
-l Only view local filesystems
-P Use the POSIX output format
-t Only list certain filesystem types
-T Print the filesystem type
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[edit] Examples
[edit] List all filesystems
df
This will output all filesystems, their total size, total used space, total available space, and mount point.
[edit] List only local filesystems
df -l
This will ouput only local filesystems.
[edit] Use a human readable size format
df -h
This will output all filesystems, with their size formatted in kilobytes, megabytes, gigabytes, etc.
[edit] Use the SI size format
df -H
This will output all filesystems, with their size formatted in kibibytes, mibibytes, gibibytes, etc.
[edit] Print the filesystem type
df -T
This will output all filesystems, as well as their type
[edit] Limit the filesystem type
df -t ext3
This will output all filesystems that are in the ext3 format
[edit] Select a certain device
df /dev/hda1
This will output the information for the device "/dev/hda1"
[edit] Putting it all together
Now that we've seen a whole bunch of different options, here are a few common, useful examples:
df -h -l
This will list all local filesystems in human readable format
df -h -T
This will list all filesystems, their types, and their size in a human readable format
