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explain_putenv_or_die

explain_putenv_or_die

Section: C Library Functions (3)
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NAME

explain_putenv_or_die - change or add an environment variable and report errors  

SYNOPSIS

#include <libexplain/putenv.h>

void explain_putenv_or_die(char *string);
int explain_putenv_on_error(char *string);  

DESCRIPTION

The explain_putenv_or_die function is used to call the putenv(3) system call. On failure an explanation will be printed to stderr, obtained from the explain_putenv(3) function, and then the process terminates by calling exit(EXIT_FAILURE).

The explain_putenv_on_error function is used to call the putenv(3) system call. On failure an explanation will be printed to stderr, obtained from the explain_putenv(3) function, but still returns to the caller.

string
The string, exactly as to be passed to the putenv(3) system call.
 

RETURN VALUE

The explain_putenv_or_die function only returns on success, see putenv(3) for more information. On failure, prints an explanation and exits, it does not return.

The explain_putenv_on_error function always returns the value return by the wrapped putenv(3) system call.  

EXAMPLE

The explain_putenv_or_die function is intended to be used in a fashion similar to the following example:
explain_putenv_or_die(string);
 

SEE ALSO

putenv(3)
change or add an environment variable
explain_putenv(3)
explain putenv(3) errors
exit(2)
terminate the calling process
 

COPYRIGHT

libexplain version 0.37
Copyright (C) 2010 Peter Miller


 

Index

NAME
SYNOPSIS
DESCRIPTION
RETURN VALUE
EXAMPLE
SEE ALSO
COPYRIGHT

This document was created by man2html, using the manual pages.
Time: 21:45:50 GMT, April 16, 2011