config_var_get
config_var_get(resolv_conf, "nameserver"));
domain = config_var_get(resolv_conf, "search");
snprintf(buf, sizeof(buf), "%s", config_var_get(rc_conf, "hostname"));
domain = config_var_get(resolv_conf, "search");
snprintf(buf, sizeof(buf), "%s", config_var_get(rc_conf, "hostname"));
const char *config_var_get(const struct config_vars *, const char *);
name = config_var_get(a->cmd_names, cmd_key);