[wplug] Bash Expect usage - Automating telnet

[Pat Barron]

The only thing I can really thing of offhand that I could test against 
would be a PDP-10 emulator I have an account on out in Internet-land, 
running TOPS-20.  ;-)

--Pat.

On 5/12/2014 11:44 AM, Ben Beige wrote:
> besides MUDs I am not sure other than testing another service
> (HTTP/POP/etc...). Most things are fairly deprecated that used telnet.
>
>
>
> Ben Beige
> dariuscardren at gmail.com
>
>
> On Mon, May 12, 2014 at 11:40 AM, Pat Barron <pat at lectroid.com> wrote:
>
>> I'm not particularly familiar with expect, myself, but if your script is
>> literally as you have indicated below, it has some quoting problems.  I
>> tried the script (as written below) and get the same failure.  The
>> script gets further after fixing the double-quotes on line 6 and line 7,
>> escaping the double-quotes (putting a '\' character in front of them, as
>> you've done later in the script with the subsequent expect functions).
>>
>> I can't test it too much more than this, since I was doing my testing on
>> a Windows system under Cygwin (without the Cygwin "telnet" client
>> installed), and because these days I can't really think of anything I
>> can actually telnet to.  ;-)
>>
>> --Pat.
>>
>> On 5/12/2014 9:26 AM, scoob8000 wrote:
>>> ssh isn't an option since these are just low end devices.  They only
>>> support telnet or http.
>>>
>>> I can't even get it to spawn the telnet session, I'm sure it's something
>>> simple in my syntax that I'm missing.
>>>
>>> Here's what I get:
>>> missing close-bracket while executing "if [catch spawn"
>>> couldn't read file "telnet": no such file or directory
>>>
>>> I'll take a look at autoexpect.
>>>
>>>
>>> On Fri, May 9, 2014 at 3:43 PM, G.Pitman <gpitman at gmail.com> wrote:
>>>
>>>> You could give autoexpect a try
>>>>
>>>> http://linux.die.net/man/1/autoexpect
>>>>
>>>>
>>>> On Thu, May 8, 2014 at 8:09 AM, scoob8000 <scoob8000 at gmail.com> wrote:
>>>>
>>>>> So I've never used expect before and I'm really struggling.   I'm
>>>>> trying to come up with a script to telnet into a bunch of devices, run
>>>>> a few commands then log it.
>>>>>
>>>>> I'm eventually going to have it read a list of IP's, and using the
>>>>> exit status of the telnet put the IP address in either a pass.txt or
>>>>> fail.txt logfile.   That part I should be able to figure out.
>>>>>
>>>>> Here's what I have now based off of some examples I found online.
>>>>>
>>>>> I think I'm missing something pretty simple here, but I'm stumped.  :)
>>>>>
>>>>>
>>>>> #!/bin/bash
>>>>> host=$1
>>>>> export HISTIGNORE="expect*";
>>>>> expect -c "
>>>>> set timeout 20
>>>>> if [catch "spawn telnet $host" reason] {
>>>>> send_user "failed to spawn program: $reason\n"
>>>>> exit 1
>>>>> }
>>>>>
>>>>> expect \"Password:\"
>>>>> send \"oldpasswordr\"
>>>>> expect \"Router>\"
>>>>> send \"sys password newpassword\"
>>>>> expect \"save ok, new password saved...\"
>>>>> send \"sys cur2def\r\"
>>>>> expect \"OK"\"
>>>>> send \"exit\r\"
>>>>> expect eof"
>>>>> export HISTIGNORE="";
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