Yes, in Linux you use "tchsh" command
For Window System you can downoad ActiveTcl tool
http://www.activestate.com/activetcl?gclid=CPKw4Oru1rUCFeVDMgodKk8AbA
For Mac you go to terminam then use tclsh command

All above are generic Tcl scripting but there are different Tcl in router, tchsh EEM Tcl and Tcl IVR API which this forum is supporting. What you need Tcl for ?
 
Thanks !