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2019-10-18Restructure, and rewrite substantial partsHEADmasterdevelEinhard Leichtfuß
A notable problem (to me) with the former version was, that upon simple movements in the source file tree, these would in general cause duplicated data in the backup forest. This problem has been resolved by essentially tracking file movements, using hard links. Also, the code has been divided into several different files, extranous code removed, the organization of remote code execution simplified. In the process of simplification, all parts requiring direct interaction of the user with the program have been replaced. In most cases, this means that the program now just terminates with an error instead of allowing the user to confirm deletion of an unexpected (remnant) file. This may be considered a drawback, but actually these interactive options were anyways suboptimal solutions in most cases - where they occured, which was due to remnant files of aborted or failed former backups. In general, there have been a lot of changes. Which are not thoroughly documented here. Since there is often no strong relation to the old code, this is not deemed necessary, as the in-code documentation is expected to be of sufficient help. Also, there has been added a little general documentation in the README and particularly the NOTES file. It is to be noted that this new version is far from sophisticated. It has been tested with and is in use for real data, however lacks a lot of convenience. In particular, if a backup fails unexpectedly, the next backup will in the very most cases loudly fail without manual intervention. Also, the program is not able to continue the growth of a backup tree built with former versions of this program, by itself. This can however be arranged by hand.