O'Reilly logo

Linux Pocket Guide, 2nd Edition by Daniel J. Barrett

Stay ahead with the world's most comprehensive technology and business learning platform.

With Safari, you learn the way you learn best. Get unlimited access to videos, live online training, learning paths, books, tutorials, and more.

Start Free Trial

No credit card required

Name

df — stdin  stdout  - file  -- opt  --help  --version

Synopsis

df [options] [disk devices | files | directories]

The df (disk free) program shows you the size, used space, and free space on a given disk partition. If you supply a file or directory, df describes the disk device on which that file or directory resides. With no arguments, df reports on all mounted filesystems.

$ df
Filesystem    1k-blocks     Used Available Use% Mounted on
/dev/sda        1011928   225464    735060  24% /
/dev/sda9        521748   249148    246096  51% /var
/dev/sda8       8064272  4088636   3565984  54% /usr
/dev/sda10      8064272  4586576   3068044  60% /home

Useful options

-k

List sizes in kilobytes (the default).

-m

List sizes in megabytes.

-B N

Display sizes in blocks of N bytes. (Default = 1024)

-h

-H

Print human-readable output, and choose the most appropriate unit for each size. For example, if your two disks have 1 gigabyte and 25 kilobytes free, respectively, df -h prints 1G and 25K. The -h option uses powers of 1024, whereas -H uses powers of 1000.

-l

Display only local filesystems, not networked filesystems.

-T

Include the filesystem type (ext3, vfat, etc.) in the output.

-t type

Display only filesystems of the given type.

-x type

Don’t display filesystems of the given type.

-i

Inode mode. Display total, used, and free inodes for each filesystem, instead of disk blocks.

With Safari, you learn the way you learn best. Get unlimited access to videos, live online training, learning paths, books, interactive tutorials, and more.

Start Free Trial

No credit card required