[NTLUG:Discuss] Scripting help

[Christopher Cox]

Just for clarification, it's needed on the client side.... not on the servers
you're telnetting to.

And there are expect choices, you might not have tcl expect, but might have
pexpect (python) or Expect.pm (perl)....

(sorry about the top of thread post... seemed expected... excuse the pun)

On 10/13/2014 08:41 PM, Leroy Tennison wrote:
> I hadn't thought about expect even though I've used it before, thanks.  Now the
> question is "Is it installed on the Linux machine i have to use?"
> 
> On 10/13/2014 12:17 PM, Dave Jones wrote:
>> On Fri, Oct 10, 2014 at 11:06 PM, Leroy Tennison
>> <leroy.tennison at verizon.net> wrote:
>>> Well, interesting result, it obviously did telnet to the devices (got Trying
>>> .., Connected to..., Escape character is ..)  but then "Connection closed by
>>> foreign host." before ever showing me the login screen (three times, once
>>> for each device in my list).  BTW, I'm discovering that things which work on
>>> bash in SuSE 12.2 (bash 4.2.45(1)) don't work on RHEL 5 (bash 3.2.25(1)).
>>>
>>> On 10/09/2014 09:13 PM, Christopher Cox wrote:
>>>> On 09/24/2014 10:24 PM, Leroy Tennison wrote:
>>>>> I'm trying to get telnet to repetitively connect to a newline-delimited
>>>>> list of
>>>>> devices.  In other words, if I have device1, device2 and device3 then
>>>>> what I
>>>>> want is:
>>>>>
>>>>> telnet device1
>>>>> telnet device2
>>>>> telnet device3
>>>>>
>>>> xargs -n1 telnet <<HERE
>>>> device1
>>>> device2
>>>> device3
>>>> ...
>>>> deviceN
>>>> HERE
>>>>
>>>>
>>>>
>>>>
>>>> _______________________________________________
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>>>>
>>>
>>> _______________________________________________
>>> http://www.ntlug.org/mailman/listinfo/discuss
>> Have  you tried expect?  I have a very complex script that telnet's
>> into Cisco routers
>> all over the country and does pings to various places then puts the
>> output into a CSV
>> file for easy import into a report spreadsheet.
>>
>> You may have to do a bit of trial-and-error from the command line with
>> expect to the
>> devices but once you get that part figured out, wrap a while loop around it.
>>
>> while read DEVICE; do
>>    expect << EOF
>>      spawn telnet $DEVICE
>>      expect "Username:"
>>      send "blah"
>>      (continue expect commands...)
>>      send "exit"
>>      exit
>> EOF
>> done < inputfile
>>
>> inputfile is a list of the devices each on their own line.
>>
>> Dave
>>
>> _______________________________________________
>> http://www.ntlug.org/mailman/listinfo/discuss
>>
> 
> 
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> 
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