explain_setenv_or_die(3) Library Functions Manual explain_setenv_or_die(3) NAME explain_setenv_or_die - change or add an environment variable and report errors SYNOPSIS #include <libexplain/setenv.h> void explain_setenv_or_die(const char *name, const char *value, int over- write); int explain_setenv_on_error(const char *name, const char *value, int over- write); DESCRIPTION The explain_setenv_or_die function is used to call the setenv(3) system call. On failure an explanation will be printed to stderr, obtained from the explain_setenv(3) function, and then the process terminates by calling exit(EXIT_FAILURE). The explain_setenv_on_error function is used to call the setenv(3) system call. On failure an explanation will be printed to stderr, obtained from the explain_setenv(3) function, but still returns to the caller. name The name, exactly as to be passed to the setenv(3) system call. value The value, exactly as to be passed to the setenv(3) system call. overwrite The overwrite, exactly as to be passed to the setenv(3) system call. RETURN VALUE The explain_setenv_or_die function only returns on success, see setenv(3) for more information. On failure, prints an explanation and exits, it does not return. The explain_setenv_on_error function always returns the value return by the wrapped setenv(3) system call. EXAMPLE The explain_setenv_or_die function is intended to be used in a fashion sim- ilar to the following example: explain_setenv_or_die(name, value, overwrite); SEE ALSO setenv(3) change or add an environment variable explain_setenv(3) explain setenv(3) errors exit(2) terminate the calling process COPYRIGHT libexplain version 1.3 Copyright (C) 2010 Peter Miller explain_setenv_or_die(3)
NAME | SYNOPSIS | DESCRIPTION | RETURN VALUE | EXAMPLE | SEE ALSO | COPYRIGHT
Want to link to this manual page? Use this URL:
<https://man.freebsd.org/cgi/man.cgi?query=explain_setenv_or_die&sektion=3&manpath=FreeBSD+Ports+15.1.quarterly>