Linux df Command
Learn Linux df Command with examples
Published
- Linux df Command
- df command Syntax
- df Command Options
- df Command Example
- df -h Command
- df -T Command
- df -t Command
- df -x Command
- Display available space and mount point for a folder
Linux df Command
The df stands for “disk filesystem”. In Linux, we can use “df” command to display the disk space used in the file system.
df Command define following:
- Number of blocks used.
- The number of blocks available.
- The directory where the file system is mounted.
df Command Syntax
>> df [OPTION]... [FILE]...
df Command Options
| Option | Description |
| -a --all |
It is used to include pseudo; duplicate; remote file systems. |
| -B --block-size=SIZE |
It is used to scale sizes by SIZE before printing them; for example; the '-BM' option prints sizes in units of 1048576 bytes. |
| -h --human-readable |
It is used to display sizes in powers of 1024 (e.g 1023M). |
| -H --si |
It is used to show sizes in powers of 1000 (e.g 1.5G) |
| -i --inodes |
It is used to list inode information instead of block usage. |
| -l --local |
It is used to limit the listing to local file systems. |
| --no-sync | It is used for not invoking sync before getting usage info (default). |
| --output[=FIELD_LIST] | This option used if we want to use the output format defined by FIELD_LIST or print all fields if FIELD_LIST is omitted. |
| -P --portability |
It is used to use the POSIX output format. |
| --total | It is used to exclude all entries insignificant to available space and produce a total. |
| -t --type=TYPE |
It is used to limit the listing to file systems of type TYPE. |
| -T --print-type |
It is used to display the file system type. |
| -x --exclude-type=TYPE |
It is used to limit the listing to file systems; not of type TYPE. |
| --help | It is used to display the help manual having brief information about the supported options. |
| --version | It is used to display the version information of the df command. |
df Command Example
The default df command will show the disk space usage in a tabular form.
The df command is useful for discovering the available free space on a system or file system.
>> df
Filesystem 1K-blocks Used Available Use% Mounted on
/dev/sdb 263174212 1161336 248574720 1% /
tmpfs 3124888 0 3124888 0% /mnt/wsl
tools 146892048 110478604 36413444 76% /init
none 3122804 0 3122804 0% /dev
none 3124888 8 3124880 1% /run
none 3124888 0 3124888 0% /run/lock
none 3124888 0 3124888 0% /run/shm
none 3124888 0 3124888 0% /run/user
tmpfs 3124888 0 3124888 0% /sys/fs/cgroup
drivers 146892048 110478604 36413444 76% /usr/lib/wsl/drivers
lib 146892048 110478604 36413444 76% /usr/lib/wsl/lib
C:\ 146892048 110478604 36413444 76% /mnt/c
D:\ 86972412 59789760 27182652 69% /mnt/d
df -h Command
The ‘-h’ option is used to display the disk space in a human-readable form.
It will display the size in powers of 1024 and will append G for GBs, M for MBs, and B for Bytes.
>> df -h
Filesystem Size Used Avail Use% Mounted on
/dev/sdb 251G 1.2G 238G 1% /
tmpfs 3.0G 0 3.0G 0% /mnt/wsl
tools 141G 106G 35G 76% /init
none 3.0G 0 3.0G 0% /dev
none 3.0G 8.0K 3.0G 1% /run
none 3.0G 0 3.0G 0% /run/lock
none 3.0G 0 3.0G 0% /run/shm
none 3.0G 0 3.0G 0% /run/user
tmpfs 3.0G 0 3.0G 0% /sys/fs/cgroup
drivers 141G 106G 35G 76% /usr/lib/wsl/drivers
lib 141G 106G 35G 76% /usr/lib/wsl/lib
C:\ 141G 106G 35G 76% /mnt/c
D:\ 83G 58G 26G 69% /mnt/d
df -T Command
The ‘-T’ option is used to display the file system type.
It will add a new column having the file system type to output.
>> df -T
Filesystem Type 1K-blocks Used Available Use% Mounted on
/dev/sdb ext4 263174212 1161336 248574720 1% /
tmpfs tmpfs 3124888 0 3124888 0% /mnt/wsl
tools 9p 146892048 110481704 36410344 76% /init
none devtmpfs 3122804 0 3122804 0% /dev
none tmpfs 3124888 8 3124880 1% /run
none tmpfs 3124888 0 3124888 0% /run/lock
none tmpfs 3124888 0 3124888 0% /run/shm
none tmpfs 3124888 0 3124888 0% /run/user
tmpfs tmpfs 3124888 0 3124888 0% /sys/fs/cgroup
drivers 9p 146892048 110481704 36410344 76% /usr/lib/wsl/drivers
lib 9p 146892048 110481704 36410344 76% /usr/lib/wsl/lib
C:\ 9p 146892048 110481704 36410344 76% /mnt/c
D:\ 9p 86972412 59789764 27182648 69% /mnt/d
df -t Command
The ‘-t’ option is used with the file system type to display the specific file system.
It will only display a given file system. We can specify more than one file system with it.
>> df -t ext4
Filesystem 1K-blocks Used Available Use% Mounted on
/dev/sdb 263174212 1161336 248574720 1% /
df -x Command
The ‘-x’ option is used with the specific file system type to exclude it from the output.
It will display all other file system types except the given types.
>> df -x squashfs
Filesystem 1K-blocks Used Available Use% Mounted on
/dev/sdb 263174212 1161336 248574720 1% /
tmpfs 3124888 0 3124888 0% /mnt/wsl
tools 146892048 110480340 36411708 76% /init
none 3122804 0 3122804 0% /dev
none 3124888 8 3124880 1% /run
none 3124888 0 3124888 0% /run/lock
none 3124888 0 3124888 0% /run/shm
none 3124888 0 3124888 0% /run/user
tmpfs 3124888 0 3124888 0% /sys/fs/cgroup
drivers 146892048 110480340 36411708 76% /usr/lib/wsl/drivers
lib 146892048 110480340 36411708 76% /usr/lib/wsl/lib
C:\ 146892048 110480340 36411708 76% /mnt/c
D:\ 86972412 59789764 27182648 69% /mnt/d
Display available space and mount point for a folder
To display the available space, file system type, and mount point of a folder, pass the folder name (fruits) with the df command.
>> df fruits
Filesystem 1K-blocks Used Available Use% Mounted on
/dev/sdb 263174212 1161336 248574720 1% /