DF(1)

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.