Df

df (abbreviation for disk free) is a command used to display the amount of file system disk space usage. It is include in the coreutils package in Ubuntu.

df
Filesystem     1K-blocks    Used Available Use% Mounted on

df -h
  -h, --human-readable

df -kh -xoverlay
   -x --exclude . For example: overlay 

df -i or df --inodes
df -i
Filesystem      Inodes  IUsed   IFree IUse% Mounted on

df -l
   -l local filesystems

Examples

df -h
Filesystem      Size  Used Avail Use% Mounted on
udev            481M     0  481M   0% /dev
tmpfs            99M  608K   98M   1% /run
/dev/vda1        25G  2.1G   22G   9% /
tmpfs           493M     0  493M   0% /dev/shm
tmpfs           5.0M     0  5.0M   0% /run/lock
tmpfs           493M     0  493M   0% /sys/fs/cgroup
/dev/vda15      105M  3.6M  101M   4% /boot/efi
tmpfs            99M     0   99M   0% /run/user/0

 df -h
Filesystem      Size  Used Avail Use% Mounted on
udev            481M     0  481M   0% /dev
tmpfs            99M  556K   99M   1% /run
/dev/sda1       4.7G  1.3G  3.5G  26% /
tmpfs           493M     0  493M   0% /dev/shm
tmpfs           5.0M     0  5.0M   0% /run/lock
tmpfs           493M     0  493M   0% /sys/fs/cgroup
/dev/sda15      105M  3.6M  101M   4% /boot/efi
tmpfs            99M     0   99M   0% /run/user/1000

Related terms

• find
• ls
• du
• docker system df
• statfs (2) http://man7.org/linux/man-pages/man2/statfs.2.html

See also

• df, df -h, virt-df, sar -F, df -hT, df --help
• file, File system, directory, touch, mkdir, ls, ln truncate, fallocate, split, stat, inode, File descriptor, superblock, block size (blockdev), fuser, lsof, scrub, chattr, ulimit (nofiles), cp, mv, file (command), mkfifo, chmod
• File system, du, df, find, ls, mkdir, touch, locate
• du, du -hs, Disk space usage, df, ls, tree, find, docker system df, journalctl --disk-usage, No space left on device, ENOSPC, sar -F, growpart, resize2fs, ncdu, duf, dua-cli

http://man7.org/linux/man-pages/man1/df.1.html