DF(1) manual page

Table of Contents

## Name

df - report filesystem disk space usage

## Synopsis

df [OPTION]... [FILE]...

## Description

This manual page documents the GNU version of df. df displays the amount of disk space available on the filesystem containing each file name argument. If no file name is given, the space available on all currently mounted filesystems is shown. Disk space is shown in 1K blocks by default, unless the environment variable POSIXLY_CORRECT is set, in which case 512-byte blocks are used.

If an argument is the absolute file name of a disk device node containing a mounted filesystem, df shows the space available on that filesystem rather than on the filesystem containing the device node (which is always the root filesystem). This version of df cannot show the space available on unmounted filesystems, because on most kinds of systems doing so requires very nonportable intimate knowledge of filesystem structures.

## Options

Show information about the filesystem on which each FILE resides, or all filesystems by default.

-a, --all
  include filesystems having 0 blocks
--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, --kilobytes
  like --block-size=1024
-l, --local
  limit listing to local filesystems
-m, --megabytes
  like --block-size=1048576
--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 filesystems of type TYPE
-T, --print-type
  print filesystem type
-x, --exclude-type=TYPE
  limit listing to filesystems not of type TYPE
-v
  (ignored)
--help
  display this help and exit
--version
  output version information and exit

## Reporting Bugs

Report bugs to <bug-fileutils@gnu.org>.

## See Also

The full documentation for df is maintained as a Texinfo manual. If the info and df programs are properly installed at your site, the command

info df

should give you access to the complete manual.

Table of Contents

- Name
- Synopsis
- Description
- Options
- Reporting Bugs
- See Also