检查是否是SSH提示输入密码 [英] check is SSH prompt for password or not

问题描述

我有数百个主机的列表.我想在一个循环中使用ssh运行命令，如果我的ssh密钥设置正确，那么如果遇到密码挑战，我想跳到下一个主机，然后执行命令

Hi I have a list of few hundred hosts. I want to run a command using ssh in a loop, if my ssh keys are set properly, then I execute a command if I get challenge for password I want to skip to the next host

所以可以说我有hosta和hostb以及hostc.我可以对hosta& hostc，但是hostb向我挑战密码.有没有一种方法可以检查主机是否会向我询问密码?所以我的逻辑是

So lets say I have hosta and hostb and hostc. I can do a ssh to hosta & hostc , but hostb is challenging me for password. Is there a way to check if a hosts will challenge me for password or not? So my logic would be

if I get challenge from $host; then
   skip host 
else
   ssh $host 'command'
fi 

我希望这是有道理的.预先谢谢你

I hope this makes sense. Thanking you in advance

推荐答案

for host in host1 host2 host3; do
    ssh -o PasswordAuthentication=no $host command
done

要使其平行添加&:

for host in host1 host2 host3; do
    ssh -o PasswordAuthentication=no $host command &
done

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