Transcribe and execute simple Unix utils. First stroke - proof of consept rather than production code
One process (exec-epf ((ls -a))) spawned. fork/pipe and exec-path almost work.
Clearer testing with . exec-path seems to work.
Pipes now work for external binaries. Streamline testing a bit.
pipe with spliced in scheme code seem to work
piping works as long as ports are file-stream-ports. String port still fails. fork/pipe needs total rewrite.
Clean up. Move process into sep file. Move syntax tests into sep file.
Show-case in example.rkt