shell图形化菜单界面

如下写一个优雅的shell图形化界面

#!/bin/bash# simple script menufunction diskspace {        clear        df -h}function whoSEOn {    clear    who}function memusage {    clear    cat /PRoc/meminfo}function menu {    clear    echo    echo -e "/t/t/tSys Admin Menu/n"    echo -e "/t1. Display disk space"    echo -e "/t2. Display logged on users"    echo -e "/t3. Display memory usage"    echo -e "/t0. Exit program/n/n"    echo -en "/t/tEnter option: "    read -n 1 option}while [ 1 ]do    menu    case $option in        0)        break ;;        1)        diskspace ;;        2)        whoseon ;;        3)        memusage ;;        *)        clear        echo "Sorry, wrong selection";;    esac    echo -en "/n/n/t/t/tHit any key to continue"    read -n 1 linedoneclear