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Views: 1070 | Replies: 4
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Join Date: Aug 2007
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Light Poster
Hello, I need to create a shell script to telnet to a remote server. Perform some action and then exit from that server. I am trying with a dummy script: #!/bin/bash telnet 172.11.11.21 8101<dummy.txt exit The dummy.txt contains the password. The script is not working with the port number. I am getting the following error: 8101: Bad file descriptor Please advice.
Last edited by programmer321 : Jun 25th, 2008 at 4:15 am.
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Join Date: Apr 2008
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Light Poster
username="myUser"
password=`cat dummy.txt`
# alternatively:
#password=$1
telnet 172.11.11.21 8101 <<EOF
$username
$password
#insert command here
EOF •
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Join Date: Oct 2007
Posts: 264
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Rep Power: 1
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Posting Whiz in Training
Hey There,
Your results may vary depending on what's running on the port you're connected to. For instance, I don't believe straight-up telnet (port 23) allows for non-interactive here-document scripting. In such instances, you can use other programs like Perl or, probably more easily, Expect to script out a "fake human interaction"
Best wishes,
Mike
Your results may vary depending on what's running on the port you're connected to. For instance, I don't believe straight-up telnet (port 23) allows for non-interactive here-document scripting. In such instances, you can use other programs like Perl or, probably more easily, Expect to script out a "fake human interaction"
Best wishes,
Mike
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Join Date: Oct 2007
Posts: 264
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Posting Whiz in Training
Good deal 
Just for clarity, the point I was trying to make - try that test with port 23 - if you have telnetd running on that machine
I'm glad you're all set !
Best wishes,
Mike
Just for clarity, the point I was trying to make - try that test with port 23 - if you have telnetd running on that machine
I'm glad you're all set !
Best wishes,
Mike
Linux and Unix Tips, Tricks and Individual Advice - The Linux and Unix Menagerie!
------------------------------------------------------------------------
Having trouble passing cert exams? Check out How To Pass Any Computer Certification Test!
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Having trouble passing cert exams? Check out How To Pass Any Computer Certification Test!
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