Early 80's VMS had a Keep/Purge system for history of files. Everytime you edited a file a version number was bumped up by 1. There was a command, "purge", I think that set the Keep count which was default to 3.
This would have been within the contemporary Dos and disk capabilities and size of 160-360kBytes, although slow (5-15 seconds).
When Dave Cutler moved from DEC to MS I expected the Dos console under windows to get that same feature.
Disappointed. A gajillion lost hours could have be saved.
This would have been within the contemporary Dos and disk capabilities and size of 160-360kBytes, although slow (5-15 seconds).
When Dave Cutler moved from DEC to MS I expected the Dos console under windows to get that same feature. Disappointed. A gajillion lost hours could have be saved.