Preservation of correspondence

Yes. Neither my tar nor GNU tar is a subset of the other. (For example, my tar supports files larger than 8GB, which I was somewhat surprised to find GNU tar didn't - and GNU tar has some kind of attempt at incremental backups which I don't understand; mine makes no attempt at that. I also got mine to pass all the static Zwicky torture tests and behave reasonably in the face of the dynamic ones, which GNU tar didn't. That was some years back, though.) My tar tries to understand some of the GNU tar private header formats (specifically, the long-name and sparse-file ones) but, since I was unable to find any documentation on them, I probably don't have them all and quite possibly don't have the ones I do handle quite right. But if you have a thing for the GNU name, or GPL licensing, my tar probably is not for you. Probably. My approach to that is to run my own mailserver (static IPs and no administrative prohibitions on mailservers are non-optional to me when selecting a connectivity provider). Not to say that that approach is suitable for everyone, of course - I've seen it said often enough that there are good mail-handling services out there, but as I've never wanted one, I've never looked into any in detail. /~\ The ASCII der Mouse \ / Ribbon Campaign X Against HTML mouse at rodents.montreal.qc.ca / \ Email! 7D C8 61 52 5D E7 2D 39 4E F1 31 3E E8 B3 27 4B