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Why do you have the parentheses creating a sub shell? I could not think of a case where I would need them, the code seems to work just fine without the parenthesescodepoet– codepoet2021-09-09 21:55:15 +00:00Commented Sep 9, 2021 at 21:55
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@reportaman from the docs "The lock terminates when the shell process that created the lock exits; it is therefore often convenient to create file locks within subshells, since the lock is automatically released when the subshell exits."Taeram– Taeram2022-06-01 21:17:45 +00:00Commented Jun 1, 2022 at 21:17
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