I am trying to build a basic TCL skeleton script that reads a remote SNMP OID and displays the value on the screen.

Question

I am trying to build a basic TCL skeleton script that reads a remote SNMP OID and displays the value on the screen.
I don't want it to be an EEM Event, I just want to run it from the (tcl)# prompt.
So I guess I'm asking if you can use cli_exec and other commands in the "namespace import ::cisco::eem::*" in a normal non-EEM script - can I do that?
This is the error I get:
OTN.159(tcl)#source flash:TCL_SNMP_Remote_Read.tcl
invalid command name "::cisco::eem::event_register_none"             ^
% Invalid input detected at '^' marker.
What am I missing?
=================  TCL_SNMP_Remote_Read.tcl  ==============================
::cisco::eem::event_register_none
namespace import ::cisco::eem::*
namespace import ::cisco::lib::*
if [catch {cli_open} RESULT]
    { error $RESULT $errorInfo }
    else { array set cli1 $RESULT }
if [catch {cli_exec $cli1(fd) "snmp get v2c 192.168.1.100 public timeout 1 oid 1.3.6.1.2.1.1.1.0" } RESULT]
       { error $RESULT $errorInfo  }
       else { set SnmpSysDesc $RESULT }
if [catch {cli_close $cli1(fd) $cli1(tty_id)} RESULT] {
            error $RESULT $errorInfo
puts $SnmpSysDesc
=========================================================================
In the sho-run config I have:
event manager directory user policy "flash:/"
event manager session cli username "cisco"
Any help to get me started would be greatly appreciated!
Tim

Answer 1

If you don't want an EEM policy, then don't use any of the EEM constructs.  Instead, all you need is this:
set output [exec "snmp get v2c 192.168.1.100 public timeout 1 oid 1.3.6.1.2.1.1.1.0"]puts $output