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* POSIX calls the `-a` operator obsolescent and strongly discourages its use, instead recommending chaining `test` calls instead: https://pubs.opengroup.org/onlinepubs/9699919799/utilities/test.html
* POSIX calls the `-a` operator obsolescent and strongly discourages its use, instead recommending chaining `test` calls instead: https://pubs.opengroup.org/onlinepubs/9699919799/utilities/test.html