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DF(1)                            User Commands                           DF(1)NNAAMMEE       df - report file system disk space usageSSYYNNOOPPSSIISS       ddff [_O_P_T_I_O_N]... [_F_I_L_E]...DDEESSCCRRIIPPTTIIOONN       This  manual  page  documents  the  GNU version of ddff.  ddff displays the       amount of disk space available on the file system 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 contain-       ing  a  mounted  file system, ddff 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 ddff 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.OOPPTTIIOONNSS       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.       --aa, ----aallll              include dummy file systems       --BB, ----bblloocckk--ssiizzee=_S_I_Z_E use SIZE-byte blocks       --hh, ----hhuummaann--rreeaaddaabbllee              print sizes in human readable format (e.g., 1K 234M 2G)       --HH, ----ssii              likewise, but use powers of 1000 not 1024       --ii, ----iinnooddeess              list inode information instead of block usage       --kk     like ----bblloocckk--ssiizzee=_1_K       --ll, ----llooccaall              limit listing to local file systems       ----nnoo--ssyynncc              do not invoke sync before getting usage info (default)       --PP, ----ppoorrttaabbiilliittyy              use the POSIX output format       ----ssyynncc invoke sync before getting usage info       --tt, ----ttyyppee=_T_Y_P_E              limit listing to file systems of type TYPE       --TT, ----pprriinntt--ttyyppee              print file system type       --xx, ----eexxcclluuddee--ttyyppee=_T_Y_P_E              limit listing to file systems not of type TYPE       --vv     (ignored)       ----hheellpp display this help and exit       ----vveerrssiioonn              output version information and exit       SIZE may be (or may be an integer optionally followed by) one  of  fol-       lowing: kB 1000, K 1024, MB 1000*1000, M 1024*1024, and so on for G, T,       P, E, Z, Y.AAUUTTHHOORR       Written by Torbjorn Granlund, David MacKenzie, and Paul Eggert.RREEPPOORRTTIINNGG BBUUGGSS       Report bugs to <bug-coreutils@gnu.org>.CCOOPPYYRRIIGGHHTT       Copyright © 2006 Free Software Foundation, Inc.       This is free software.  You may redistribute copies  of  it  under  the       terms       of       the      GNU      General      Public      License       <http://www.gnu.org/licenses/gpl.html>.  There is NO WARRANTY,  to  the       extent permitted by law.SSEEEE AALLSSOO       The  full  documentation  for ddff is maintained as a Texinfo manual.  If       the iinnffoo and ddff programs are properly installed at your site, the  com-       mand              iinnffoo ddff       should give you access to the complete manual.df 5.97                            May 2008                              DF(1)