debian man page for explain_dup2_or_die

explain_dup2_or_die(3)					     Library Functions Manual					    explain_dup2_or_die(3)

NAME
       explain_dup2_or_die - duplicate a file descriptor and report errors

SYNOPSIS
       #include <libexplain/dup2.h>
       void explain_dup2_or_die(int oldfd, int newfd);

DESCRIPTION
       The  explain_dup2_or_die  function  is used to call the dup2(2) system call.  On failure an explanation will be printed to stderr, obtained
       from explain_dup2(3), and then the process terminates by calling exit(EXIT_FAILURE).

       This function is intended to be used in a fashion similar to the following example:
	      explain_dup2_or_die(oldfd, newfd);

       oldfd   The oldfd, exactly as to be passed to the dup2(2) system call.

       newfd   The newfd, exactly as to be passed to the dup2(2) system call.

       Returns:
	       This function only returns on success.  On failure, prints an explanation and exits.

SEE ALSO
       dup2(2) duplicate a file descriptor

       explain_dup2(3)
	       explain dup2(2) errors

       exit(2) terminate the calling process

COPYRIGHT
       libexplain version 0.52
       Copyright (C) 2008 Peter Miller

															    explain_dup2_or_die(3)