Tell the free disk space of a path in megabytes on the command line with one simple command line tool for Windows, Mac OS X, Linux and Raspberry Pi.

• Download the free Swiss File Knife Base from Sourceforge.
• Open the Windows CMD command line, Mac OS X Terminal or Linux shell.
• OS X : type mv sfk-mac-64.exe sfk and chmod +x sfk then ./sfk
• Linux: type mv sfk-linux-64.exe sfk and chmod +x sfk then ./sfk. OS X and Linux syntax may differ, check the help within the tool.

sfk space [dirname|-help]
sfk filesys [dirname]

show disk space and/or file system informations.
a folder name can be specified which relates
to a specific volume or hard disk.

options
   -byte[s]   all size infos in bytes
   -tab[s]    pure values, tab separated
   -bin[ary]  calculate with binary megabytes
              of 1048576 bytes each.

aliases
   sfk diskspace  same as space
   sfk fsinfo     same as filesys
   sfk freespace  tell only free space

chaining support
   cannot use chain input data.

examples
   sfk filesys
      tell details about the file system of the
      current directory (.)

   sfk filesys D:
      tell about the file system used for drive D:

   sfk space
      tell total and free MB of the current volume.
 
example outputs

  sfk space .

      totalmb=307383 freemb=6057

      just tells the total and free mb available in the volume
      of the current dir.

  sfk fsinfo .

      filesys="NTFS" volume="15234973 EXTDATA" totalmb=307383 freemb=6057

      tells also details of the current filesystem,
      volume ID and label.

  sfk space -bytes -tab +filter -tabform "$col2"

      6057123840

      get only the free space value in bytes. under linux, 
      use -tabform "#col2", or use the unified syntax
      -utabform "#col2" on all platforms.

sfk space [dirname|-help]
sfk filesys [dirname]

show disk space and/or file system 
informations. a folder name can be
specified which relates to a specific
volume or hard disk.

options
   -byte[s]   all size infos in bytes
   -tab[s]    pure values, tab separated
   -bin[ary]  calculate with binary 
              megabytes of 1048576 bytes
              each.

aliases
   sfk diskspace  same as space
   sfk fsinfo     same as filesys
   sfk freespace  tell only free space

chaining support
   cannot use chain input data.

examples
   sfk filesys
      tell details about the file 
      system of the current directory (.)

   sfk filesys D:
      tell about the file system used for 
      drive D:

   sfk space
      tell total and free MB of the current 
      volume.
 

example outputs

  sfk space .

      totalmb=307383 freemb=6057

      just tells the total and free mb 
      available in the volume of the
      current dir.

  sfk fsinfo .

      filesys="NTFS" volume="15234973 
      EXTDATA" totalmb=307383 freemb=6057

      tells also details of the current 
      filesystem, volume ID and label.

  sfk space -bytes -tab +filter -tabform 
                          "$col2"

      6057123840

      get only the free space value in 
      bytes. under linux, use -tabform
      "#col2", or use the unified syntax
      -utabform "#col2" on all platforms.