La vida loca

需求: 使用scp下載資料，幫使用者自動輸入yes之後再輸入passward，或是直接輸入password

#!/usr/bin/expect
set ip [lindex $argv 0]
set pass "password"

spawn scp root@$ip:/folder/filename .
expect {
        "(yes/no)?" 
        {
            send "yes\r"
            expect {
                password: {send "$pass\r"; exp_continue}
            }
        }
        timeout {
           exit 1
        }
        password: {send "$pass\r"; exp_continue}
}

interact

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需求: ssh登入，輸入使用者名稱以及密碼

#!/usr/bin/expect

set timeout 10

set ip [lindex $argv 0]

set user username

set password password

spawn ssh -o StrictHostKeyChecking=no "$user\@$ip"

expect {

        "assword:" {send "$password\r"}

        timeout {

           exit 1

        }

}

interact

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需求: 如果帳號密碼多組不同且有些帳號不需要密碼

#!/usr/bin/expect

set passwords { bad1 bad2 bad3 good }

spawn ssh -o PreferredAuthentications=keyboard-interactive \
          -o NumberOfPasswordPrompts=[llength $passwords] root@tree

set try 0
expect {
    "Password: " {
        if { $try >= [llength $passwords] } {
            send_error ">>> wrong passwords\n"
            exit 1
        }

        send [lindex $passwords $try]\r
        incr try
        exp_continue
    }

    "bash-4.2" {
        interact
    }

    timeout {
        send_error ">>> timed out\n"
        exit 1
    }
}