Bash和expect：無法通過telnet重新啓動路由器

Question

我試圖通過telnet連接到它通過期望重新啓動D-Link路由器。 問題是我無法執行（通過期望腳本）路由器支持的任何命令。

首先，我告訴你一個短Telnet會話使用我的路由器：

telnet 192.168.1.1 
Trying 192.168.1.1... 
Connected to 192.168.1.1. 
Escape character is '^]'. 
BCM96338 ADSL Router 
Login: admin 
Password: 
> swversion show 
EU_3-12-01-1R00.A2pB026.d20m 
> logout 

Bye bye. Have a nice day!!! 
Connection closed by foreign host. 

現在我試圖讓它自動與期待劇本，但我不能使它發揮作用。這裏的腳本：

#!/usr/bin/expect -f 

#exp_internal 1 
set timeout 30 

#router username 
set name admin 

#command to execute 
set routercmd "swversion show" 

#router password 
set pass mypassword 

#router IP address 
set routerip 192.168.1.1 

spawn telnet $routerip 
# send username & password 
expect "Login: " 
send "$name\r" 
expect "Password: " 
send "$pass\r" 
expect "> " 
send "$routercmd\r" 
expect "> " 

當我執行該腳本，它被卡在密碼提示：

./reboot_dut.sh 
spawn telnet 192.168.1.1 
Trying 192.168.1.1... 
Connected to 192.168.1.1. 
Escape character is '^]'. 
BCM96338 ADSL Router 
Login: admin 
Password: 

如果我取消了#exp_internal 1號線我得到：

./reboot_dut.sh 
spawn telnet 192.168.1.1 
parent: waiting for sync byte 
parent: telling child to go ahead 
parent: now unsynchronized from child 
spawn: returns {6398} 

expect: does "" (spawn_id exp7) match glob pattern "Login: "? no 
Trying 192.168.1.1... 
expect: does "Trying 192.168.1.1..." (spawn_id exp7) match glob pattern "Login: "? no 


expect: does "Trying 192.168.1.1...\r\n" (spawn_id exp7) match glob pattern "Login: "? no 
Connected to 192.168.1.1. 
expect: does "Trying 192.168.1.1...\r\nConnected to 192.168.1.1." (spawn_id exp7) match glob pattern "Login: "? no 


expect: does "Trying 192.168.1.1...\r\nConnected to 192.168.1.1.\r\n" (spawn_id exp7) match glob pattern "Login: "? no 
Escape character is '^]'. 
expect: does "Trying 192.168.1.1...\r\nConnected to 192.168.1.1.\r\nEscape character is '^]'." (spawn_id exp7) match glob pattern "Login: "? no 


expect: does "Trying 192.168.1.1...\r\nConnected to 192.168.1.1.\r\nEscape character is '^]'.\r\n" (spawn_id exp7) match glob pattern "Login: "? no 
BCM96338 ADSL Router 

expect: does "Trying 192.168.1.1...\r\nConnected to 192.168.1.1.\r\nEscape character is '^]'.\r\nBCM96338 ADSL Router\r\n" (spawn_id exp7) match glob pattern "Login: "? no 
Login: 
expect: does "Trying 192.168.1.1...\r\nConnected to 192.168.1.1.\r\nEscape character is '^]'.\r\nBCM96338 ADSL Router\r\nLogin: " (spawn_id exp7) match glob pattern "Login: "? yes 
expect: set expect_out(0,string) "Login: " 
expect: set expect_out(spawn_id) "exp7" 
expect: set expect_out(buffer) "Trying 192.168.1.1...\r\nConnected to 192.168.1.1.\r\nEscape character is '^]'.\r\nBCM96338 ADSL Router\r\nLogin: " 
send: sending "admin\r" to { exp7 } 

expect: does "" (spawn_id exp7) match glob pattern "Password: "? no 
a 
expect: does "a" (spawn_id exp7) match glob pattern "Password: "? no 
dmin 
Password: 
expect: does "admin\r\nPassword: " (spawn_id exp7) match glob pattern "Password: "? yes 
expect: set expect_out(0,string) "Password: " 
expect: set expect_out(spawn_id) "exp7" 
expect: set expect_out(buffer) "admin\r\nPassword: " 
send: sending "mypassword\r" to { exp7 } 

expect: does "" (spawn_id exp7) match glob pattern "> "? no 
expect: timed out 
send: sending "swversion show\r" to { exp7 } 

expect: does "" (spawn_id exp7) match glob pattern "> "? no 

> swversion show 

expect: does "\r\n> swversion show\r\n" (spawn_id exp7) match glob pattern "> "? yes 
expect: set expect_out(0,string) "> " 
expect: set expect_out(spawn_id) "exp7" 
expect: set expect_out(buffer) "\r\n> " 

Answer 1

SOLUTION：我找到了解決問題的辦法。我試圖重啓的路由器是D-LINK 2640B。一個工作預計腳本該路由器爲：

#!/usr/bin/expect -f 

spawn telnet ROUTER_IP 
match_max 10000 
expect *login:* 
sleep 2 
send -- "USERNAME\r" 
expect *assword:* 
sleep 2 
send -- "PASSWORD\r" 
expect *>* 
send -- "\r" 
expect *>* 
send -- "COMMAND\r" 
expect *>* 
send -- "\r" 
expect *>* 
send -- "logout\r" 

Answer 2

我想說，你需要匹配你的提示符「>」，而不是「>」（即它之後沒有空格）。