[已解决]如何用expect实现ssh两级登录

pyartist

一级登录投入命令这个我已经实现

1. #!/usr/bin/expect -f
   
2. 
   
3. set ip [ lindex $argv 0 ]
   
4. set passwd [ lindex $argv 1 ]
   
5. set cmd [ lindex $argv 2 ]
   
6. 
   
7. set timeout 10000
   
8. spawn ssh root@$ip
   
9. expect {
   
10. "*yes/no" { send "yes\n"; exp_continue}
    
11. "*password:" { send "$passwd\n"}
    
12. "# "        {send "\n"}
    
13. }
    
14. expect "# "
    
15. 
    
16. send "$cmd\n"
    
17. expect "# "
    
18. send "exit\n"
    
19. expect eof

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但是两级登录如何实现，我仿造上面写了个，但是不能执行通过

1. #!/usr/bin/expect -f
   
2. 
   
3. set ip [ lindex $argv 0 ]
   
4. set passwd [ lindex $argv 1 ]
   
5. set ip2 [ lindex $argv 2 ]
   
6. set passwd2 [ lindex $argv 3 ]
   
7. set cmd [ lindex $argv 4 ]
   
8. 
   
9. set timeout 10000
   
10. spawn ssh root@$ip
    
11. expect {
    
12. "*yes/no" { send "yes\n"; exp_continue}
    
13. "*password:" { send "$passwd\n"}
    
14. "# "        {send "\n"}
    
15. }
    
16. expect "# "
    
17. 
    
18. spawn ssh root@$ip2
    
19. expect {
    
20. "*yes/no" { send "yes\n"; exp_continue}
    
21. "*password:" { send "$passwd2\n"}
    
22. "# "        {send "\n"}
    
23. }
    
24. 
    
25. send "$cmd\n"
    
26. expect "# "
    
27. send "exit\n"
    
28. expect eof
    

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请教如何实现两级ssh登录，就是先ssh登录到一台主机，再从新登录的主机上ssh到另外一台主机

sunzhiguolu

虽然我不能为你解决该问题，站脚助威! 我顶你!

expert1

估计够呛，你配置ssh_config加个proxy_command吧

waker

expect "# "

spawn ssh root@$ip2

变为
expect "#"
send "ssh root@$ip2\r"

pyartist

回复 4# waker

谢谢帮助
在版主的引导下，我修改了下我的expect代码，测试可以通过

1. #!/usr/bin/expect -f
   
2. 
   
3. set ip [ lindex $argv 0 ]
   
4. set passwd [ lindex $argv 1 ]
   
5. set ip2 [ lindex $argv 2 ]
   
6. set passwd2 [ lindex $argv 3 ]
   
7. set cmd [ lindex $argv 4 ]
   
8. 
   
9. set timeout 10000
   
10. spawn ssh root@$ip
    
11. expect {
    
12. "*yes/no" { send "yes\n"; exp_continue}
    
13. "*password:" { send "$passwd\n"}
    
14. "# "        {send "\n"}
    
15. }
    
16. expect "# "
    
17. 
    
18. send "ssh root@$ip2\n"
    
19. #spawn ssh root@$ip2
    
20. expect {
    
21. "*yes/no" { send "yes\n"; exp_continue}
    
22. "*password:" { send "$passwd2\n"}
    
23. "# "        {send "\n"}
    
24. }
    
25. 
    
26. expect "# "
    
27. send "$cmd\n"
    
28. send "exit\n"
    
29. expect "# "
    
30. send "exit\n"
    
31. expect eof

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sunzhiguolu

回复 1# pyartist
您太客气了,不必送给我积分什么的. 我只是看到您的帖子没有人关注希望尽量能通过此种方式吸引大家过来看您的帖子.
另外,您也是夜神? 能否帮忙帮我看个帖子,是关于perl的.
perl print不能打印