NAME

       regfiletype - Identify the formats of Regina data files

SYNOPSIS

       regfiletype file ...

       regfiletype { -v, --version | -?, --help }

DESCRIPTION

       This utility determines which file format a given Regina data file is in.  You may pass multiple files on
       the command line; the format of each file will be written to standard output.

       Only  Regina's  modern  XML-based file formats are recognised (both compressed and uncompressed).  In its
       very early years, Regina used an impenetrable and undocumented binary format; this was replaced with  XML
       in  2002  (Regina 3.0), and support for this format was removed completely in 2013 (Regina 4.94).  If you
       still need to recognise and/or read files in this ancient  binary  format,  you  will  need  to  download
       Regina 4.93.

OPTIONS

       -v, --version
              Show which version of Regina is being used, and exit immediately.

       -?, --help
              Display brief usage information, and exit immediately.

MACOS USERS

       If  you  downloaded a drag-and-drop app bundle, this utility is shipped inside it.  If you dragged Regina
       to the main Applications folder, you can run it as /Applications/Regina.app/Contents/MacOS/regfiletype.

WINDOWS USERS

       The command-line utilities are installed beneath the Program  Files  directory;  on  some  machines  this
       directory    is    called   Program   Files   (x86).    You   can   start   this   utility   by   running
       c:\Program Files\Regina\Regina 7.3.1\bin\regfiletype.exe.

SEE ALSO

       regconvert, regina-gui.

AUTHOR

       This utility was written by Benjamin Burton <bab@maths.uq.edu.au>.  Many people have been involved in the
       development of Regina; see the users' handbook for a full list of credits.

                                                  14 March 2023                                   REGFILETYPE(1)