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 1.4
       Copyright (C) 2010 Peter Miller

                                                                         explain_putenv_or_die(3)