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how to fire a telnet command other than expect

Posted on 2014-03-20
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Last Modified: 2014-04-02
my telnet commands are:

1.  telnet localhost 6667  : this prompts a osgi promt

2.  osgi> bundle <number>

I need the output of the second command.
NOTE: It seems I dont have /usr/bin/expect on the server. It is a production server and i cannot install expect.
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Question by:pvinodp
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6 Comments
 
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Accepted Solution

by:
Daniel Helgenberger earned 668 total points
ID: 39942931
NOTE: It seems I dont have /usr/bin/expect on the server. It is a production server and i cannot install expect.

The only way I know to script prompts is expect. You need it from the telnet client's side; so any client, not necessarily your server, will do.

However, if you do not need to login, this is worth a try:
telnet localhost 6667 << EOF
bundle <number>
EOF

Open in new window

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LVL 86

Assisted Solution

by:CEHJ
CEHJ earned 668 total points
ID: 39943085
Why don't you use a Java Telnet api?
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LVL 13

Expert Comment

by:Daniel Helgenberger
ID: 39943178
Actually a very good idea; did not think about anything else but bash.

Though I would use something more common in Linux:, witch should work out of the box: Perl or Python. This way you can even overcome logins; but you nay still need libraries like net-telnet.
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LVL 38

Assisted Solution

by:Gerwin Jansen, EE MVE
Gerwin Jansen, EE MVE earned 664 total points
ID: 39943642
You could also run use expect on your test or development server and connect to the production server using "telnet <production server> 6667". Do you have expect experience?
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Author Comment

by:pvinodp
ID: 39944516
i cannot reach my production servers. And i do not know expect, but i can learn if needed.

Yes, my server can run java program and perl.

I found few articles on java and telnet. But as said already, that would need library. Which offcourse is not part of jdk. i found one with org.apache.commons.net.telnet.

Is it possible to write this in perl?
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Author Closing Comment

by:pvinodp
ID: 39972012
I think expect is the way.. i am going with it.
I need to have expect installed no matter what library I use
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