Make copy module idempotent.
Check md5sum before overwriting a file. Unconditionally copying changes the timestamp.
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1 changed files with 2 additions and 3 deletions
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@ -54,11 +54,10 @@ changed = False
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if os.path.exists(dest):
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md5sum = os.popen("md5sum %s" % dest).read().split()[0]
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os.system("cp %s %s" % (src, dest))
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md5sum2 = os.popen("md5sum %s" % dest).read().split()[0]
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md5sum2 = os.popen("md5sum %s" % src).read().split()[0]
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if md5sum != md5sum2:
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os.system("cp %s %s" % (src, dest))
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changed = True
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# mission accomplished
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