explain_putenv_or_die(3) Library Functions Manual explain_putenv_or_die(3)
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 0.52
Copyright (C) 2010 Peter Miller
explain_putenv_or_die(3)