在 shell 脚本中使用密码创建 ssh 连接

Question

我可以使用用户名和密码登录客户端。我知道 ssh 密钥更好、更安全，但现在我仍然想使用密码来执行此操作。

[michael@devserver ~]$ ssh -p 3333  -D 3333 testuser@localhost
testuser@localhost's password:
bind: Address already in use
channel_setup_fwd_listener: cannot listen to port: 3333
Could not request local forwarding.

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Last login: Thu Nov 16 17:46:54 2017 from localhost
testuser@mypi:~ $

我想做同样的事情，但是在脚本中。我的尝试如下。但是，当我尝试时，系统仍然提示我输入密码。稍后我还将尝试使用 ssh 密钥来执行此操作，如我的注释行中所示。

#!/bin/sh
userServer='serveruser'
userClient='clientuser'
passwordServer='serverpassword'
passwordClient='clientpassword'
passwordClient=3333

if echo $passwordClient | ssh -p $port $userClient@localhost | grep ECDSA;  then
# or if keys are used:
# if su -c "ssh -p $port $userClient@localhost" $userServer | grep ECDSA;  then
        echo 'Logon successful'
else
        echo 'Connection refused'
fi