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Creating a RFC 1123 compliant date for HTTP header creation on the CLI

Either LC_ALL=C date -u '+%a, %d %b %Y %T GMT' or LC_ALL=C TZ=GMT date '+%a, %d %b %Y %T GMT' are correct. Don't use semicolons, you only need to set those environment variables per-invocation. ...
Walf's user avatar
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Postfix postmap header_checks warnings

You are trying to generate the hashed .db Berkeley DB on a file that does not contain indexed tables but regular expressions. Hence, it complains about incorrectly formatted files and duplicate ...
Esa Jokinen's user avatar
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