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dup.2: Add subhead for dup3()
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
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@ -93,7 +93,7 @@ The close-on-exec flag
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see
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.BR fcntl (2))
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for the duplicate descriptor is off.
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.SS dup3()
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.BR dup3 ()
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is the same as
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.BR dup2 (),
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