ssh expect脚本

Question

我有这个期望脚本被另一个脚本调用来记录cisco设备。某些原因变得慢到登录到思科设备。有没有人可以看到任何问题或建议可能会提高此脚本的速度。在此先感谢

#!/usr/bin/expect 

log_user 0 
set timeout 10 
set userid "id" 
set password "pass" 

# ############## Get two arguments - (1) Device (2) Command to be executed 
set device [lindex $argv 0] 
set command [lindex $argv 1] 

spawn /usr/bin/ssh -l $userid $device 

match_max [expr 32 * 1024] 

expect { 
    -re "RSA key fingerprint" {send "yes\r"} 
    timeout {puts "Host is known"} 
} 

expect { 
    -re "username: " {send "$userid\r"} 
    -re "(P|p)assword: " {send "$password\r"} 
    -re "Warning:" {send "$password\r"} 
    -re "Connection refused" {puts "Host error -> $expect_out(buffer)";exit} 
    -re "Connection closed" {puts "Host error -> $expect_out(buffer)";exit} 
    -re "no address.*" {puts "Host error -> $expect_out(buffer)";exit} 
    timeout {puts "Timeout error. Is device down or unreachable?? ssh_expect";exit} 
} 

expect { 
    -re "\[#>]$" {send "term len 0\r"} 
    timeout {puts "Error reading prompt -> $expect_out(buffer)";exit} 
} 

expect { 
    -re "\[#>]$" {send "$command\r"} 
    timeout {puts "Error reading prompt -> $expect_out(buffer)";exit} 
} 

expect -re "\[#>]$" 

set output $expect_out(buffer) 
send "exit\r" 
puts "$output\r\n" 

Answer 1

这可能是更好的问ServerFault上。无论如何，我首先要确保托管ssh守护进程的服务器或设备的熵不低，并且我会使用Wireshark或类似的方法来分析流量，以查看连接的哪一方似乎正在等待另一方。

Answer 2

将exp_internal 1添加到您的期望脚本中。您将能够看到期望如何与模式匹配。我怀疑你的脚本恰好暂停了$ timeout秒，因为你的一个模式未能匹配。