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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 re- port 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) sys- tem 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 1.3 Copyright (C) 2010 Peter Miller explain_putenv_or_die(3)
NAME | SYNOPSIS | DESCRIPTION | RETURN VALUE | EXAMPLE | SEE ALSO | COPYRIGHT
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