Manual Pages for UNIX Operating System command usage for man df

User Commands                                               DF(1)



NAME
     df - report file system 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 file sys-
     tem containing each file name argument.  If no file name  is
     given,  the  space  available  on all currently mounted file
     systems 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 file system, df shows the space
     available on that file system rather than on the file system
     containing  the  device  node (which is always the root file
     system).  This version of df cannot show the space available
     on  unmounted file systems, because on most kinds of systems
     doing so requires very  nonportable  intimate  knowledge  of
     file system structures.

OPTIONS
     Show information about the file system on  which  each  FILE
     resides, or all file systems by default.

     Mandatory arguments to long options are mandatory for  short
     options too.

     -a, --all
          include dummy file systems

     -B, --block-size=SIZE
          use SIZE-byte blocks

     --total
          produce a grand total

     -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   like --block-size=1K

     -l, --local



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User Commands                                               DF(1)



          limit listing to local file systems

     --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 file systems of type TYPE

     -T, --print-type
          print file system type

     -x, --exclude-type=TYPE
          limit listing to file systems not of type TYPE

     -v   (ignored)

     --help
          display this help and exit

     --version
          output version information and exit

     Display values are in units of the first available SIZE from
     --block-size,  and  the DF_BLOCK_SIZE, BLOCK_SIZE and BLOCK-
     SIZE environment variables.   Otherwise,  units  default  to
     1024 bytes (or 512 if POSIXLY_CORRECT is set).

     SIZE may be (or may be an integer  optionally  followed  by)
     one  of  following:   KB  1000,  K  1024,  MB  1000*1000,  M
     1024*1024, and so on for G, T, P, E, Z, Y.

AUTHOR
     Written by Torbjorn  Granlund,  David  MacKenzie,  and  Paul
     Eggert.

REPORTING BUGS
     Report df bugs to bug-coreutils@gnu.org
     GNU             coreutils             home             page:
     
     General        help        using        GNU        software:
     
     Report        df         translation         bugs         to
     

COPYRIGHT
     Copyright cO 2010 Free  Software  Foundation,  Inc.   License



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User Commands                                               DF(1)



     GPLv3+:      GNU      GPL     version     3     or     later
     .
     This is free software: you are free to change and  redistri-
     bute  it.   There is NO WARRANTY, to the extent permitted by
     law.

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 coreutils df invocation

     should give you access to the complete manual.

ATTRIBUTES
     See attributes(5) for descriptions of the  following  attri-
     butes:

     ___________________________________________
    |   ATTRIBUTE TYPE   |    ATTRIBUTE VALUE  |
    |____________________|______________________|_
    | Availability       |  file/gnu-coreutils |
    |____________________|______________________|_
    | Interface Stability|  Uncommitted        |
    |____________________|_____________________|

NOTES
     Source    for    GNU    coreutils    is     available     on
     http://opensolaris.org.

























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