| DF(1) | General Commands Manual | DF(1) | 
df —
| df | [ -agln] [-Ghkm|-ihkm|-Pk]
      [-ttype]
      [file | file_system ...] | 
df displays statistics about the amount of free disk
  space on the specified file_system or on the file system
  of which file is a part. By default, all sizes are
  reported in 512-byte block counts. If neither a file or a
  file_system operand is specified, statistics for all
  mounted file systems are displayed (subject to the -l
  and -t options below).
Note that the printed count of available blocks takes minfree into account, and thus will be negative when the number of free blocks on the filesystem is less than minfree.
The following options are available:
-aMNT_IGNORE flag.-G-i or
      -P options, and it is modelled after the Solaris
      -g option. This option will override the
      -g, -h,
      -k, and -m options, as
      well as any setting of BLOCKSIZE.-g-g option causes the numbers to be reported in
      gigabytes (1024*1024*1024 bytes).-h-i-k-k option causes the numbers to be reported in
      kilobytes (1024 bytes).-lMNT_LOCAL flag set. If a non-local file system is
      given as an argument, a warning is issued and no information is given on
      that file system.-m-m option causes the numbers to be reported in
      megabytes (1024*1024 bytes).-ndf will
      not request new statistics from the file systems, but will respond with
      the possibly stale statistics that were previously obtained.-PIf both the -P and
        -k option are specified, the output will be
        preceded by the following header line, formatted to match the data
        following it:
"Filesystem 1024-blocks Used Available Capacity Mounted on\n"
    
    If the -P option is specified without
        the -k options, the output will be preceded by
        the following header line, formatted to match the data following it:
"Filesystem <blksize>-blocks Used Available Capacity Mounted on\n"
    
    The header line is followed by data formatted as follows:
"%s %d %d %d %d%% %s\n", <file system name>, <total space>,
    <space used>, <space free>, <percentage used>,
    <file system root>
    
    Note that the -i option may not be
        specified with -P.
-t
    typeBLOCKSIZEBLOCKSIZE is set, and
      the -g, -h,
      -k and -m options are not
      specified, the block counts will be displayed in units of that size
    block.df utility appeared in
  Version 1 AT&T UNIX.
| August 27, 2018 | NetBSD 9.4 |