I learned that the POSIX C library guarantees that, when multiple processes are writing to the same file, and all of them have the file opened for appending, data shall not be lost.
But I don't think that guarantees that data won't be interleaved, with output from process A in the middle of a write from process B. Does it?

In reply to Re: open for append by ysth
in thread open for append by cmeyer

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