AppleScript的为Ping测试SSH连接之前，每个客户端 [英] Applescript to ping test each client prior to ssh connection

问题描述

我试图让连接到一个列表本地SSH的机器，在一个新的终端窗口中的每个连接孔的AppleScript。在此之前尝试的ssh连接，我想ping客户端，看它是否可用：如果是这样，运行ssh命令，如果没有则迭代到下一个客户端。当我运行该脚本，它似乎在第一次连​​接工作，但随后给了我 - ＆GT;错误号-10004 余下的客户端（和挂调试器）。任何反馈会大大AP preciated，谢谢！

 设置主机{10.2.0.199，10.2.0.11，10.2.0.91，10.2.1.591，10.2.0.41}
设置的uname为{asus_client01，asrock_comp，msi003，gigabyte4，intel05client}
告诉应用程序终端
    启用
    与我重复1到主机的数
        设置this_uname项我的uname --extract个人用户名
        主机设置为字符串--extract的IPv4我的this_host项
        设置uname_host为this_uname＆安培; @＆放大器;那么this_host
        设置hostUp为真        尝试
            做shell脚本的ping -c 1 -t 5＆安培;那么this_host
        出错
            设置hostUp为false
            显示对话框的this_host＆安培; 似乎是下来。
            延迟2
        年底试        如果hostUp然后
            做shell脚本SSH＆放大器; uname_host
        万一
    重复结束
告诉结束
 

解决方案

有做shell脚本和做的剧本。不同的是，做shell脚本是标准的脚本增加的一部分，将打开一个非交互的shell，执行给定的字符串，和stdout还给你回没有任何帮助从终端像其他应用程序。 做shell脚本应该从未在其他任何用来告诉本身以外（我）应用程序块，因为你违反了一些AppleScript的证券可以在AppleScript的释放和技术说明找到。 做剧本命令在应用终端的AppleScript命令的一部分。 做剧本将进入目标窗口给定的字符串并执行就像你在自己的终端键入。 做剧本仅受终端应用程序的支持，不能在其外部使用。

所以，要么做shell脚本：

 做shell脚本平-o stackoverflow.com
 

或者通过使用终端做脚本

 告诉应用程序终端
    做剧本平-o stackoverflow.com
告诉结束
 

所以总的脚本可以是这个样子：

 设置主机{10.2.0.199，10.2.0.11，10.2.0.91，10.2.1.591，10.2.0.41}
设置的uname为{asus_client01，asrock_comp，msi003，gigabyte4，intel05client}--security检查：主机列表中不能超过的uname长
如果（主机计数）＆GT; （UNAME计数），然后返回与我再说一遍，从1数主机
    重复1次 - 模拟继续
        设置currentAddress项我的主机
        设置currentHostname项我的UNAME        如果不是（（做shell脚本的ping -t -o 5＆安培; currentAddress＆安培;＆放大器;＆GT;开发/空＆放大器;＆安培;回声是||回声无）作为布尔值），然后
            退出重复 - 继续
        万一        告诉应用程序终端
            做剧本SSH＆放大器; currentHostname
        告诉结束
    重复结束
重复结束
 

I'm trying to make an Applescript that connects to a list local ssh machines, with each connection opening in a new terminal window. Prior to attempting the ssh connection, I'd like to ping the client to see if it's available: if it is, run the ssh command, if not then iterates to the next client. When I run the script it seems to work for the first connection but then gives me --> error number -10004 for the remaining clients (and hangs the debugger). Any feedback would be greatly appreciated, thanks!

set hosts to {"10.2.0.199", "10.2.0.11", "10.2.0.91", "10.2.1.591", "10.2.0.41"}
set uname to {"asus_client01", "asrock_comp", "msi003", "gigabyte4", "intel05client"}
tell application "Terminal"
    activate
    repeat with i from 1 to the count of hosts
        set this_uname to item i of uname --extract individual username
        set this_host to item i of hosts as string --extract iPv4 
        set uname_host to this_uname & "@" & this_host
        set hostUp to true

        try
            do shell script "ping -c 1 -t 5 " & this_host
        on error
            set hostUp to false
            display dialog this_host & " seems to be down."
            delay 2
        end try

        if hostUp then
            do shell script "ssh " & uname_host
        end if
    end repeat
end tell

解决方案

There is a difference between do shell script and do script. The difference is that do shell script is part of the standard script addition and will open an non-interactive shell, execute the given string, and return stdout back to you without any help from another application like Terminal. do shell script should never been used in any other tell application block except itself (me) because you violate some AppleScript securities you can find in AppleScript release and technical notes. do script command is part of AppleScript command in the application Terminal. do script will enter the given string in the targeted window and execute that like you have typed in Terminal yourself. do script is only supported by Terminal application and can't be used outside of it.

So it's either do shell script:

do shell script "ping -o stackoverflow.com

or do script by using the Terminal

tell application "Terminal"
    do script "ping -o stackoverflow.com"
end tell

So the total script could look something like this:

set hosts to {"10.2.0.199", "10.2.0.11", "10.2.0.91", "10.2.1.591", "10.2.0.41"}
set uname to {"asus_client01", "asrock_comp", "msi003", "gigabyte4", "intel05client"}

--security check: hosts list can't be longer than uname
if (count of hosts) > (count of uname) then return

repeat with i from 1 to count hosts
    repeat 1 times -- simulate continue
        set currentAddress to item i of hosts
        set currentHostname to item i of uname

        if not ((do shell script "ping -o -t 5 " & currentAddress & "&>dev/null && echo yes || echo no") as boolean) then
            exit repeat -- continue
        end if

        tell application "Terminal"
            do script "ssh " & currentHostname
        end tell
    end repeat
end repeat

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