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39 lines
1.1 KiB
Python
Executable File
39 lines
1.1 KiB
Python
Executable File
#!/usr/bin/python3
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# usage: sync-mtime src dst
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#
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# synchronize atime/mtime on files between src and dst.
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#
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# src and dst are directories, where dst is expected to contain a subset of the
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# files found in src. for each file present in dst or a subdirectory thereof,
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# if atime/mtime differ between the same file in src and that file in dst,
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# update atime/mtime on the file in dst.
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import os
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import sys
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from pathlib import Path
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def time_eq(a: os.stat_result, b: os.stat_result) -> bool:
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return (
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(a.st_mtime_ns == b.st_mtime_ns) and
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(a.st_atime_ns == b.st_atime_ns)
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)
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src, dst = sys.argv[1:]
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for dirpath, dirnames, filenames in Path(dst).walk():
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for filename in filenames:
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dst_file = dirpath / filename
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if not dst_file.is_file():
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continue
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src_file = src / dst_file.relative_to(dst)
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src_stat = src_file.stat(follow_symlinks=False)
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dst_stat = dst_file.stat(follow_symlinks=False)
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if time_eq(src_stat, dst_stat):
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continue
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ns = (src_stat.st_atime_ns, src_stat.st_mtime_ns)
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os.utime(dst_file, ns=ns, follow_symlinks=False)
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