Какую ОС вы используете? Ваша ОС не видит диалогового окна. Используйте ОС Дебиан 3 и выше whiptail Displays user-friendly dialog boxes from shell scripts. whiptail is a "dialog" replacement using newt instead of ncurses. It provides a method of displaying several different types of dialog boxes from shell scripts. This allows a developer of a script to interact with the user in a much friendlier manner. From Debian 3.0r0 APT http://www.tldp.org/LDP/Linux-Dictionary/html/index.html
sh fullinstall126.sh
用逗号分隔用户名
