On 7 January 2012 17:26, Bjartur Thorlacius <svartma...@gmail.com> wrote: > That's not enough. I want the output of all commands (messages, documents, > calculations, notes and error reports) to be stored on increasingly > mainstream terabyte disks along with enough metadata to uniquely identify > it. "Modification" is superseding a file with a derivation. Derivatives that > do not supersede any other file need also be stored, whether they be drafts > for future supersedes or files on their own.
So long as you have the input state for those commands -- the files themselves -- why must we log the output for each and every command? If we know the state of the directory, why log invocations of `ls`? If we know the state of the file, why log invocations of `sort` (unless we're writing to a file)? If we maintain complete version history, such logs are nothing but a waste of space: we may as well just open a shell viewing the system as it was that day, and `sort` afresh. cls
