df Linux Commands
What is Linux df Command?
Explanation
df COMMAND:df command is used to report how much free disk space is available for each mount you have. The first column show the name of the disk partition as it appears in the /dev directory. Subsequent columns show total space, blocks allocated and blocks available.SYNTAX :
df [options]OPTIONS:
-a
Include dummy file systems.
-h
Print sizes in human readable format.(e.g., 1K 234M 2G)
-H
Print sizes in human readable format but use powers of 1000 not 1024.
-i
List inode information instead of block usage.
-l
Limit listing to local file systems.
-P
Use the POSIX output format.
-T
Print file system type.
EXAMPLE:
-
df
Output:
Filesystem
1K-blocks
Used Available Use% Mounted on
/dev/mapper/VolGroup00-LogVol00
150263916 14440324 128067408 11% /
/dev/sda1
101086
10896
84971 12% /boot
tmpfs
253336
0
253336
0% /dev/shm
In the above output:
/dev/mapper/VolGroup00-LogVol00 -> Specifies FileSystem.
/dev/sda1
-> Specifies FileSystem.
tmpfs
-> Specifies FileSystem.
Prints default format.
-
df -h
Output:
Filesystem
Size Used Avail Use% Mounted on
/dev/mapper/VolGroup00-LogVol00
144G
14G 123G 11% /
/dev/sda1
99M
11M
83M 12% /boot
tmpfs
248M
0 248M
0% /dev/shm
Print size in human readable format.
-
df -H
Output:
Filesystem
Size
Used Avail Use% Mounted on
/dev/mapper/VolGroup00-LogVol00
154G
15G
132G 11% /
/dev/sda1
104M
12M
88M 12% /boot
tmpfs
260M
0
260M
0% /dev/shm
Print size in human readable format but use powers of 1000 not to 1024.
df [options]
OPTIONS:
-a
Include dummy file systems.
-h
Print sizes in human readable format.(e.g., 1K 234M 2G)
-H
Print sizes in human readable format but use powers of 1000 not 1024.
-i
List inode information instead of block usage.
-l
Limit listing to local file systems.
-P
Use the POSIX output format.
-T
Print file system type.
EXAMPLE:
-
df
Output:
Filesystem
1K-blocks
Used Available Use% Mounted on
/dev/mapper/VolGroup00-LogVol00
150263916 14440324 128067408 11% /
/dev/sda1
101086
10896
84971 12% /boot
tmpfs
253336
0
253336
0% /dev/shm
In the above output:
/dev/mapper/VolGroup00-LogVol00 -> Specifies FileSystem.
/dev/sda1
-> Specifies FileSystem.
tmpfs
-> Specifies FileSystem.
Prints default format.
-
df -h
Output:
Filesystem
Size Used Avail Use% Mounted on
/dev/mapper/VolGroup00-LogVol00
144G
14G 123G 11% /
/dev/sda1
99M
11M
83M 12% /boot
tmpfs
248M
0 248M
0% /dev/shm
Print size in human readable format.
-
df -H
Output:
Filesystem
Size
Used Avail Use% Mounted on
/dev/mapper/VolGroup00-LogVol00
154G
15G
132G 11% /
/dev/sda1
104M
12M
88M 12% /boot
tmpfs
260M
0
260M
0% /dev/shm
Print size in human readable format but use powers of 1000 not to 1024.
| -a | Include dummy file systems. |
| -h | Print sizes in human readable format.(e.g., 1K 234M 2G) |
| -H | Print sizes in human readable format but use powers of 1000 not 1024. |
| -i | List inode information instead of block usage. |
| -l | Limit listing to local file systems. |
| -P | Use the POSIX output format. |
| -T | Print file system type. |
-
dfOutput:Filesystem
1K-blocks
Used Available Use% Mounted on /dev/mapper/VolGroup00-LogVol00
150263916 14440324 128067408 11% / /dev/sda1
101086
10896
84971 12% /boot tmpfs
253336
0
253336
0% /dev/shm In the above output: /dev/mapper/VolGroup00-LogVol00 -> Specifies FileSystem. /dev/sda1
-> Specifies FileSystem. tmpfs
-> Specifies FileSystem.
Prints default format. -
df -hOutput:Filesystem
Size Used Avail Use% Mounted on /dev/mapper/VolGroup00-LogVol00
144G
14G 123G 11% / /dev/sda1
99M
11M
83M 12% /boot tmpfs
248M
0 248M
0% /dev/shm
Print size in human readable format. -
df -HOutput:Filesystem
Size
Used Avail Use% Mounted on /dev/mapper/VolGroup00-LogVol00
154G
15G
132G 11% / /dev/sda1
104M
12M
88M 12% /boot tmpfs
260M
0
260M
0% /dev/shm
Print size in human readable format but use powers of 1000 not to 1024.
