$ sudo apt-get update
$ sudo apt-get install pcb-lesstif 

pcb-lesstif is installed in your system.

Make ensure the pcb-lesstif package were installed using the commands given below,

$ sudo dpkg-query -l | grep pcb-lesstif *

You will get with pcb-lesstif package name, version, architecture and description in a table

pcb-lesstif package basic information: