linux裏命令的對話框whiptail

Linux裏面能夠在命令行裏造成對話框，用光標上下，左右選擇，一屏一屏的問答選擇，填寫。

whiptail是Linux不須要另行安裝，默認就有的，其它的好比dialog須要另行安裝，很麻煩，雖然功能比較好些。

帖一個寫好的東西。

#!/bin/bash
trap "" 2
while true
do
OPTION=$(whiptail --title "Email Manager" --nocancel --menu "Choose your option" 15 60 4 \
"1" "Add Email User" \
"2" "Delete Email User" \
"3" "List Email User" \
"4" "EXIT"  3>&1 1>&2 2>&3)
    case $OPTION in
     1)
        EmailAddress=$(whiptail --title "EmailAddress-form Input Box" --inputbox "What is your add EmailAddress?" 10 60 @shenxu.com 3>&1 1>&2 2>&3)
        exitstatus=$?
        if [ $exitstatus = 0 ]; then
          grep $EmailAddress /etc/postfix/virtual_mailbox_maps>/dev/nul
          exitstatus=$?
            if [ $exitstatus = 0 ]; then
                whiptail --msgbox "The Email Address is a existed" 10 40
            elif (whiptail --title "Add Yes/No Box" --yesno "Are you sure add $EmailAddress." 10 60) then
               /etc/postfix/mailadd.sh $EmailAddress
               whiptail --msgbox "The Email Address $EmailAddress is a added." 10 40
            fi
        else
          whiptail --msgbox "You chose Cancel." 10 40
        fi
      ;;
     2)
        EmailAddress=$(whiptail --title "EmailAddress-form Input Box" --inputbox "What is your Delete EmailAddress?" 10 60 @shenxu.com 3>&1 1>&2 2>&3)
        exitstatus=$?
        if [ $exitstatus = 0 ]; then
          grep $EmailAddress /etc/postfix/virtual_mailbox_maps>/dev/nul
          exitstatus=$?
            if [ $exitstatus != 0 ]; then
                whiptail --msgbox "The Email Address $EmailAddress is a not exist." 10 40
            elif (whiptail --title "Add Yes/No Box" --yesno "Are you sure delete $EmailAddress." 10 60) then
               /etc/postfix/maildel.sh $EmailAddress
               whiptail --msgbox "The Email Address $EmailAddress is a deleted." 10 40
            fi
        else
          whiptail --msgbox "You chose Cancel." 10 40
        fi
      ;;
     3)
        EmailAddress=$(cat /etc/postfix/virtual_mailbox_maps | awk '{print $1}')
         whiptail --msgbox "The Email User list are $EmailAddress." --scrolltext 20 40
      ;;
     4)
        echo "EXIT"
        break
      ;;
   esac
done
trap : 2

whiptail --title "Email Manager" --nocancel --menu "Choose your option" 15 60 4 \
"1" "Add Email User" \
"2" "Delete Email User" \
"3" "List Email User" \
"4" "EXIT"  3>&1 1>&2 2>&3

--title "Email Manager" 是標題，雙引號裏是本身填的提示信息

--nocancel 是在這個圖文裏面不顯示取消，只顯示OK

--menu "Choose your option" 15 60 4 是表示菜單提示，雙引號裏是本身填的提示信息，15是高度，60是長度，4是有個選擇項目

下面的1-4是本身的提示

最後比較關鍵，3>&1 1>&2 2>&3是爲了把選擇的內容填進變量OPTION

whiptail --title "EmailAddress-form Input Box" --inputbox "What is your add EmailAddress?" 10 60 @shenxu.com 3>&1 1>&2 2>&3

--inputbox "What is your add EmailAddress?" 是能夠造成一個讓用戶輸入的提示框

@shenxu.com 是默認輸入text裏的值

whiptail --msgbox "You chose Cancel." 10 40 是顯示一行你的提示

其實還有--infobox，彷佛和msgbox很像，其實不一樣，它基本上用不上，是在shell運行完後，能夠往前翻頁能看見的東西

--scrolltext 20 40是爲了顯示多行的時候能夠上下滾動

另外還有--passwordbox和text同樣輸入，就是以***顯示

whiptail --checklist "choose" 15 60 2 "1" "aa" ON "2" "bb" ON

15 60仍是高和寬，2是有幾個選項，和menu同樣，後面多了一個ON或者OFF表示狀態，就是菜單出來後默認是否是選，On是選，OFF不選，用空格鍵來選擇。能夠多選。

--radiolist，不能夠多選了。ON就只能有一個，其它必須是OFF

還有一個顯示進度條的--gauge，我以爲沒啥用處。

#!/bin/bash {     for n in `seq 100`     do         sleep 1    echo $n     done } | whiptail --gauge "Please wait while installing" 6 60 0