使用bash在ssh中使用Expect执行sudo [英] Execute sudo using expect inside ssh from bash

问题描述

我想创建一个脚本来自动在多个Linux主机上进行安装. 我使用ssh键登录到主机，并且在登录名内想执行sudo，我试图使用Expect，我在工作站上有，但我在服务器上没有剧本. 我该怎么做，这是我的尝试，但是没有运气:

I want to create a script that automates a installation on multiple linux hosts. I login to the hosts using ssh keys and inside the login I want to do a sudo, I am trying to use expect, which I have on the stations but I don't have on the server which runs the script. How do I do this, this is my try, but no luck with it:

#!/bin/bash


ssh user@station04 <<EOF
expect -d -c "
send \"sudo ls\"
expect {
        \"password:\" { send '1234'; exp_continue }
        \"$user@\"{
                send "exit\r"
        }
        default {exit 1}
}"
EOF


exit

结果:

send: sending "sudo ls" to { exp0 }

expect: does "" (spawn_id exp0) match glob pattern "password:"? no
expect: read eof
expect: set expect_out(spawn_id) "exp0"
expect: set expect_out(buffer) ""
argv[0] = expect  argv[1] = -d  argv[2] = -c  argv[3] = 
send "sudo ls\r"
expect {
    "password:" { send '1234';  exp_continue }
    "@"{
        send exitr
    }
    default {exit 1}
}  
set argc 0
set argv0 "expect"
set argv ""

推荐答案

expect的用法不太正确-不要send命令；而不是spawn命令，而send只是其输入.因此，您的脚本将变为:

You got the usage of expect not quite right - don't send a command; rather spawn the command and send just its input. So, your script becomes:

ssh … <<EOF
expect -d -c "
    spawn sudo ls
    expect -nocase password: { send 1234\r }
    expect eof
"
exit
EOF

这篇关于使用bash在ssh中使用Expect执行sudo的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！