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Quick links About
df
Syntax
Examples
Related commands
Linux / Unix main page
About df
Report how much free disk
space is available for each mount you have.
Syntax
df [OPTION]... [FILE]...
| -a, --all |
include dummy file systems |
| -B,
--block-size=SIZE |
use SIZE-byte blocks |
| -h, --human-readable |
print sizes in human readable
format (e.g., 1K 234M 2G) |
| -H, --si |
likewise, but use powers of 1000
not 1024 |
| -i, --inodes |
list inode information instead
of block usage |
| -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 |
| --sync |
invoke sync before getting usage
info |
| -t, --type=TYPE |
limit listing to file systems of
type TYPE |
| -T, --print-type |
print file system type |
| -x,
--exclude-type=TYPE |
limit listing to file systems
not of type TYPE |
| --version |
output version information and
exit |
Examples
df
In the above example when performing just the df
command with no additional switches or specification of the file or
directory you would get a listing of all file systems and their used
and available space.
df -h
The above command is one of the most commonly used commands as it
displays the sizes in an easy to read format as shown in the below
example.
| Filesystem |
Size |
Used |
Avail |
Use% |
Mounted on |
| /dev/hda2 |
28G |
7.6G |
19G |
29% |
/ |
| tmpfs |
252M |
0 |
252M |
0% |
/lib/init/rw |
| tmpfs |
252M |
0 |
252M |
0% |
/dev/shm |
| /dev/hda1 |
464M |
37M |
403M |
9% |
/boot |
| /dev/hda3 |
8.3G |
429M |
7.5G |
6% |
/var |
| nfs6:/home |
520G |
461G |
60G |
89% |
/home |
| mirrors:/mirrors |
1.4T |
1.1T |
233G |
83% |
/mirrors |
| /dev/mapper/big-phat |
77G |
36G |
42G |
46% |
/space |
| mailstore:/var/mail |
9.9G |
4.8G |
4.7G |
51% |
/var/mail |
df -b public_html
In the above example this command would display the amount of free
space in the public_html directory. Below is an example of the output
may display when performing this command.
Filesystem
avail
nfs.computerhope.com:/home 10068252
Related commands
du
find
ls
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