I wrote a shell quite a while ago, based on a friend&#39;s shell and also the shell in Marc Rochkind&#39;s book. It was portable across a lot of systems but small enough to fit on Minix.<br>
I used ptrace() to implement job control on Minix. See ftp://<a href="http://minnie.tuhs.org/pub/Wish/wish_internals.pdf">minnie.tuhs.org/pub/Wish/wish_internals.pdf</a><br>
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Cheers, Warren<br>
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Sent from my Android phone with K-9 Mail. Please excuse my brevity.