df
df: report file system space usage.
Synopsis
df
Description
df lists every mounted file system with its size, the space used and the space available, in 1 KiB blocks, the share in use as a percentage, and where it is mounted. The first column names its source (a disk’s address, or tmpfs).
File systems that report no size, such as /dev, are left out. Arguments are ignored.
Examples
$ df
Filesystem 1K-blocks Used ...
Notes
Sizes are always in KiB; there is no -h and no file system or path argument.
See also
du(1), mount(1), free(1)