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on_exit.3: Note that same function may be registered multiple times
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
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.\" 386BSD man pages
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.\" Modified 1993-04-02, David Metcalfe
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.\" Modified 1993-07-25, Rik Faith (faith@cs.unc.edu)
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.TH ON_EXIT 3 2007-07-26 "GNU" "Linux Programmer's Manual"
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.TH ON_EXIT 3 2008-12-05 "GNU" "Linux Programmer's Manual"
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.SH NAME
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on_exit \- register a function to be called at normal process termination
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.SH SYNOPSIS
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.BR exit (3)
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and the \fIarg\fP argument from
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.BR on_exit ().
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The same function may be registered multiple times:
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it is called once for each registration.
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.SH "RETURN VALUE"
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The
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.BR on_exit ()
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