Back in the 80's the group I worked with got a VAX with VMS. Files are versioned in VMS, and you can delete specific versions. So we used that to prank each oth

Back in the 80's the group I worked with got a VAX with VMS. Files are versioned in VMS, and you can delete specific versions. So we used that to prank each other for a while, editing someone's login script and deleting the newest version so they couldn't send the same prank back to you.