mirror of https://github.com/mkerrisk/man-pages
Clarify discussion of return values.
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@ -116,7 +116,8 @@ will append the new entry to the end of the file.
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.BR getutid (),
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and
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.BR getutline ()
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return a pointer to a \fIstruct utmp\fP on success, and NULL on failure.
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return a pointer to a \fIstruct utmp\fP on success,
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and NULL on failure (which includes the "record not found" case).
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This \fIstruct utmp\fP is allocated in static storage, and may be
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overwritten by subsequent calls.
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