• menu.sh

#!/bin/bash
#menu.sh


function menu() {
    title="My Menu"
    url="www.xhope.top"
    time=`date +%Y-%m-%d`
    cat << eof
#############################################
                 `echo -e "\033[32;40m$title\033[0m"`
#############################################
*   1) Add a user
*   2) Set password for user
*   3) Delete a user
*   4) Print disk space
*   5) Print men space
*   6) Quit
*   7) Return main menu
#############################################
$url                   $time
#############################################
eof
}

• index.sh

#!/bin/bash
#index.sh

. menu.sh  #include menu.sh
clear

menu #call menu function

while [[ true ]]; do

    read -p "Please type a  option:" option
    #echo $option

    case $option in
        1 )
            read -p "Please type username:" username
            useradd $username &>/dev/null
            if [[ $? -eq 0 ]]; then
                echo "user $username is created successfully"
            else
                echo "user $username is created failed"
            fi
        ;;
        2 )
            read -p "Please type pass username:" name
            read -p "Please type password:" pass

            echo $pass | passwd --stdin $name &>/dev/null

            if [[ $? -eq 0 ]]; then
                echo "user $username password set successfully"
            else
                echo "user $username password set failed failed"
            fi
        ;;
        3 )
            read -p "Please type username:" username
            userdel -r $username &>/dev/null
            if [[ $? -eq 0 ]]; then
                echo "user $username is deleted successfully"
            else
                echo "user $username is deleted failed"
            fi
        ;;
        4 )
            str=`df -Th`
            echo -e "\033[30;47m$str\033[0m"
        ;;
        5 )
            str=`free`
            echo -e "\033[30;47m$str\033[0m" 
        ;;
        6 )
        echo -e "\033[30;47mQuit successfully!!\033[0m"
        break
        ;;
        7 )
            clear
            menu
        ;;
    esac
done

• Shell界面