How to emulate the Expect WAIT command in pure TCL

From: Earl Grieda (egriedaQWERTY_at_IXXyahooBahoo.com)
Date: 03/24/05 

Date: Thu, 24 Mar 2005 20:39:01 GMT

I have a program that runs under Linux (RH). It execs a number of
background processes. Sometimes one, or more, of the process need to be
killed (kill -9 pid). Although they are killed they end up as zombie
processes in the defunct state. If I load Expect and use the wait command
after the kill command then the processes are removed from the process
listing (ps -ae).

However, I do not want to load Expect just for one command. Is there any
way to emulate the wait command in pure TCL?

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