Interface for statvfs() and fstatvfs()
Unless you need access to the bsize, flag, and namemax values, you should
probably look at using Filesys::DfPortable or Filesys::Df instead. They
will generally provide you with more functionality and portability.
The module should work with all flavors of Unix that implement the
'statvfs()' and 'fstatvfs()' calls. This would include Linux, *BSD, HP-UX,
AIX, Solaris, Mac OS X, Irix, Cygwin, etc ...
The 'statvfs()' and 'fstatvfs()' functions will return a list of values, or
will return 'undef' and set '$!' if there was an error.
The values returned are described in the statvfs/fstatvfs header or the
'statvfs()/fstatvfs()' man page.
The module assumes that if you have 'statvfs()', 'fstatvfs()' will also be