用expect自动ssh到远端机器执行命令

先说一下autoexpect，安装这个之后在命令行运行autoexpect -f xxscript.exp test.sh (加入test.sh是一个需要和用户交互的脚本),接下来按照提示输入，执行完成test.sh之后，打开xxscript.exp，运行xxscript.exp，可以不用交互直接执行test.sh。

有两个expect脚本可以解决自动到远端执行命令。

1。autoscp.exp，用这个脚本可以把需要执行的脚本先拷贝到远端的机器上，然后再调用下面的autossh.exp在远端机器上执行拷贝过去的脚本。

    example: ./autoscp.exp $user $password $ipaddress $localDir/test.sh $remotedir

#!/usr/bin/expect

set username [lindex $argv 0]
set password [lindex $argv 1]
set remhost [lindex $argv 2]
set localfile [lindex $argv 3]
set remotedir [lindex $argv 4]
spawn scp $localfile $username@$remhost:$remotedir

expect {
        "*re you sure you want to continue connecting*"
        {
            send "yes\n"
            expect {
                "*assword*"
                    {
                        send "$password\n"
                    }
                }
        }
        "*assword*"
        {
                send "$password\n"
        }
    }
expect eof

2。autossh.exp，用这个脚本可以执行远端机器上的脚本

example: ./autoscp.ssh $user $password $ipaddress "test.sh"

#!/usr/bin/expect

set timeout 3

set username [lindex $argv 0]
set password [lindex $argv 1]
set remhost [lindex $argv 2]
set command [lindex $argv 3]
spawn ssh $username@$remhost $command

expect {
        "*re you sure you want to continue connecting*"
        {
            send "yes\n"
            expect {
                "*assword*"
                    {
                        send "$password\n"
                    }
                }
        }
        "*assword*"
        {
                send "$password\n"
        }
    }
expect eof