[TriLUG] to all the TCL junkies

[Greg Brown]

Well I'm finding that tclsh isn't implemented on all Cisco routers.
In fact most that I have tried do not yet support this feature.
Shame, really, because the 'show run' done through tclsh doesn't put
those annoying "--Mark--" lines like it does if you run the same
command from the enable prompt.  This would have made backing up the
configs from the protected devices (behind firewalls) much easier.

Greg


On 3/15/09, Bob Emerson <bob.remerson at gmail.com> wrote:
> That is a nice little description. But is there anyone who has done this?
>  I'm trying to work up perl to validate some settings on all my switches, but
>  having a little tcl script to do this would be nice also.
>
>  On Wed, Mar 11, 2009 at 11:11 AM, Ryan Leathers <rleathers at americanri.com>wrote:
>
>
>  > A couple of things Greg
>  >
>  > This is a fairly recent addition to IOS (the last 4 or 5 years I
>  > believe) so its not surprising  that a 15 year veteran might not notice it.
>  >
>  > The answer to your ssh question is NO. IOS only implements the TCL core.
>  > Don't expect to do everything you can think of using extra libraries.
>  > Thats not possible in IOS. For example, you can send HTTP get, but post
>  > isn't available since that function is not part of core. You can't do
>  > anything requiring UDP or any other more exotic protocol since all of
>  > these things would require extra libraries not available to IOS.
>  >
>  > Here is a tutorial page I've found useful
>  > http://wiki.nil.com/Tclsh_on_Cisco_IOS_tutorial
>  >
>  >
>  > Ryan
>  >
>  >
>  >
>  >
>  >
>  >
>  >
>  >
>  >
>  > Greg Brown wrote:
>  > > I just learned after, oh, fifteen years at least working with Cisco gear
>  > > there is a TCL shell lurking that is built into IOS.
>  > >
>  > > Really:
>  > >
>  > > rtpnxxxxx#tclsh
>  > > rtpnxxxxx(tcl)#puts "Hello, World!\n"
>  > > Hello, World!
>  > >
>  > >
>  > > rtpnxxxxx(tcl)#
>  > >
>  > > Is anyone using this?  If so, for what?  Would it be possible to open a
>  > > socket on a IOS device, listen for a SSH connection and dump info back
>  > and
>  > > forth?
>  > >
>  > > I'm looking for a problem to match this solution.
>  > >
>  > > Greg
>  > > --
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>  > >
>  >
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>  Gandhi
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