`pax -rw -p m` sets mtimes with only seconds granularity
Originator: | thakis | ||
Number: | rdar://FB8960643 | Date Originated: | 2021 Jan 3 |
Status: | Resolved: | ||
Product: | Product Version: | ||
Classification: | Reproducible: |
% mkdir foo && touch foo/file % (rm -rf bar && mkdir bar && cd foo && pax -rw -p m . ../bar) % stat -f %Fm foo/file bar/file 1609694909.786078198 1609694972.000000000 bar/file should have an mtime that has subsecond resolution, like foo/file has. This is important for mtime-based build systems. With the current behavior, builds that use pax to copy directories only work correctly if each build step takes at least a second. (Which is often the case --- but not always. When using `git bisect run` on a tiny project, this bug can cause problems.) See https://github.com/nico/hack/blob/master/notes/copydir.md for some general background.
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got fixed in macOS 12