vish works great! Feels good. The data corruption had nothing to do with fork(). It was happening because I was trying to hold on to some data on the stack! I must be getting old. Need to work the pipe facility and possibly wildcards into this new shell.
Also, even though I am passing the environment string array into execve(), it does not seem to use it and is forcing me to supply full path names of commands I want to execute. Will figure out what is going on later. For now, this is a good point to break and move on to later topics in the book (process management etc.)
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