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Q&A

Posts tagged posix

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71%
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Q&A What are non-POSIX shells and what's the point of them?

I've been learning some Linux and I finally feel like I can find my way around the command line. But now I hear people say there are other, "non-POSIX" kinds of shell, with different semantics. Wha...

1 answer  ·  posted 5d ago by matthewsnyder‭  ·  last activity 5d ago by matthewsnyder‭

Question shell posix cli
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Q&A What unexpected things can happen if a user runs commands expecting a text file on input lacking a file-final newline?

It is often taught that in Unix/Linux text files should end with newline characters. The reason given (orally) to me by various sources was that "some commands (such as wc) assume or require a newl...

2 answers  ·  posted 9mo ago by Lover of Structure‭  ·  last activity 9mo ago by tripleee‭

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Q&A Why does the file command fail to recognize non-text files as such?

POSIX defines Text file as A file that contains characters organized into zero or more lines. The lines do not contain NUL characters and none can exceed {LINE_MAX} bytes in length, inclu...

2 answers  ·  posted 3y ago by Quasímodo‭  ·  last activity 3y ago by LawrenceC‭

Question posix file