RE: [Expectperl-discuss] Telnet not working from Cygwin when using Expect/Perl

[David B. <dbe...@an...>]

I played around with this some and on my XP PRO system

OS Name	Microsoft Windows XP Professional
Version	5.1.2600 Service Pack 2 Build 2600

With the latest cygwin (cygcheck -s)
    Cygwin DLL version info:
        DLL version: 1.5.19
        DLL epoch: 19
        DLL bad signal mask: 19005
        DLL old termios: 5
        DLL malloc env: 28
        API major: 0
        API minor: 150
        Shared data: 4
        DLL identifier: cygwin1
        Mount registry: 2
        Cygnus registry name: Cygnus Solutions
        Cygwin registry name: Cygwin
        Program options name: Program Options
        Cygwin mount registry name: mounts v2
        Cygdrive flags: cygdrive flags
        Cygdrive prefix: cygdrive prefix
        Cygdrive default prefix:
        Build date: Fri Jan 20 13:28:43 EST 2006
        CVS tag: cr-0x5ef
        Shared id: cygwin1S4

I get the same thing.

Using your slightly modified code

#!/usr/bin/perl
use Expect;
$Expect_Handle = new Expect;
$Responses = "grimlock ogin: ";
$Expect::Debug=1;
$Result = $Expect_Handle->spawn('telnet grimlock');
$Pattern_ID = $Expect_Handle->expect($Timeout,'-re', $Responses);

I get

$ perl test.pl
spawn id(3): beginning expect.
        Timeout: unlimited seconds.
        Current time: Fri Apr 21 12:27:47 2006
Waiting for new data (unlimited seconds)...
spawn id(3): new data.
spawn id(3): EOF
spawn id(3): exit(0xFF00)
spawn id(3): closing...
Returning from expect with TIMEOUT or EOF

But if I change from telnet to ssh, things seem normal

$ perl test.pl
spawn id(3): beginning expect.
        Timeout: unlimited seconds.
        Current time: Fri Apr 21 12:29:07 2006
Waiting for new data (unlimited seconds)...
spawn id(3): new data.
spawn id(3): read 52 byte(s).
Enter passphrase for key '/home/myuser/.ssh/id_dsa': Waiting for new data
(unlimited seconds)...

Looks like telnet to me. Can you use ssh?
BP

Mopuri, Shailaja wrote:
> Hi,
> Sorry for skipping the details. What I am trying to say is, telnet is
not spawned as I don't see it in the Task Manager Processes window. I
don't get any errors but telnet is not invoked. I did try using
> Net::Telnet but did not make any difference. As for "\n", the shell does
strip the whitespace.
>
> Thanks for responding to my mail.
>
> Shailaja
>
> -----Original Message-----
> From: Roland Giersig [mailto:RGi...@cp...]
> Sent: Friday, April 21, 2006 1:38 AM
> To: Mopuri, Shailaja
> Cc: exp...@li...
> Subject: Re: [Expectperl-discuss] Telnet not working from Cygwin when
using Expect/Perl
>
> Quoting "Mopuri, Shailaja" <sha...@in...>:
>
>> Hi,
>> I am trying to invoke telnet using Expect from Perl in Cygwin. The same
>> code works in Linux systems which means there is something different
when invoked from Cygwin shell. Can anyone suggest any workarounds or
suggestions to fix this issue.
>
> What are the symptoms of the failure? Any error messages? "This does not
work" is not an allowed problem-description for a technician... :-)
>
> Alternatively you could try to use Net::Telnet to connect and pass its
filehandle to exp_init, so you would avoid the cygwin shell and ptys
alltogether.
>
>> Below is the sample code that I am trying to get it work
>>
>> Thanks,
>> Shailaja
>>
>> #!/usr/bin/perl
>>
>> # use module
>> use XML::Simple;
>> use Expect;
>>
>> #Create the Expect handle
>> $Expect_Handle =3D new Expect;
>> $Cmds =3D "telnet atsism01 623";
>> $Responses =3D "server:";
>> $Result =3D $Expect_Handle->spawn($Cmds."\n");
>
> Why the "\n"? This would make the last argument "623\n" (if the shell
wouldn't strip whitespace).
>
>> # Clears the previous output accumulated incase of match failures
$Expect_Handle->clear_accum();
>> $Pattern_ID =3D $Expect_Handle->expect($Timeout,'-re', $Responses);
#Capture the current prompt
>> $Current_Prompt =3D $Expect_Handle->match();
>> #Capture the output
>> $ActualOutput =3D $Expect_Handle->before().$Current_Prompt;
>> 	=09
>>
>
> --
> RGi...@cp...
>
>
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