Interface for statvfs() and fstatvfs() Unless access to the bsize, flag, and namemax values is required, either Filesys::DfPortable or Filesys::Df could be a better choice. They will generally provide 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 ...