1How to view file name extensions for all files on a Mac 2How to view file name extensions for a individual file on a Mac The default setting for Mac OS is to not display a file's extension. For those ...

By default, Version 8 filenames are appended with an eight-character filename extension. For example, a Version 8 filename extension for a data set on the UNIX, OpenVMS, OS/2, and Windows hosts is ...