> I've noticed more than once that when I recreate a bzip2'ed tar archive on > cygwin, the file length is slightly different. Yet it expands into the same > directory tree (as determined by recursive diff). > > Is there something nondeterministic about tar and bzip2 on cygwin? If so, is > it unique to cygwin?
Not unique to cygwin - file timestamps are preserved in tar, and when the timestamps change, the compression dictionary changes, hence leading to different compression ratios. -- Eric Blake volunteer cygwin tar maintainer -- Unsubscribe info: http://cygwin.com/ml/#unsubscribe-simple Problem reports: http://cygwin.com/problems.html Documentation: http://cygwin.com/docs.html FAQ: http://cygwin.com/faq/
