For a interesting critique of Unix the "Ghosts of Unix Past" series of articles on LWN is pretty interesting. https://lwn.net/Articles/411845/ https://lwn.net/

For a interesting critique of Unix the "Ghosts of Unix Past" series of articles on LWN is pretty interesting. https://lwn.net/Articles/411845/ https://lwn.net/Articles/411845/ The whole series is worth a read, especially part 3 'unfixable desgins' which talks about Signals and the Unix permission model.