Three bytes in a zip file

John Gilmore gnu at
Fri Apr 7 01:56:28 UTC 2023

Larry Doolittle <larry at> wrote:
> $ diff <(ls --full-time -u fab-ea2bb52c-ld) <(ls --full-time -u fab-ea2bb52c-mb)
> 22c22
> < -rw-r--r-- 1 redacted redacted  644661 2023-04-04 18:10:00.000000000 -0700 marble-ipc-d-356.txt
> ---
> > -rw-r--r-- 1 redacted redacted  644661 2023-04-06 00:25:03.000000000 -0700 marble-ipc-d-356.txt

So I'm guessing that even before the zip file is re-created, the rebuild
process is leaking the rebuild timestamp into the last-modified metadata
of the generated marble-ipc-d-356.txt file?  That seems like it should
be handled by the build process explicitly setting its timestamp to
something related to the last-source-code-checkin time (with "touch
--date=XXX") rather than to current time.

Truncating the timestamps to DOS timestamps wouldn't work to eliminate
this difference anyway, since the date in the two files is two days
different; DOS timestamps are accurate to 2 seconds, as I recall.


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