UNIX-shell-and-history-feature This project consists of designing a C program to serve as a shell interface that accepts user commands and then executes each command in a separate process. This ...

The UNIX 03 certification means that Leopard conforms to the Single UNIX Specification Version 3 (SUS), a specification for how things like the shell, compiler, C APIs, and so on should work.

This includes how it blends the programming language with the command interpreter. And for that purpose, UNIX shells have evolved some ingenious solutions. In Bash, the programming constructs look ...

And Mac OS X is so interesting because it is Unix — or, rather, one of the many Unix variants — through and through. Strip away the colorful candy shell, and any number of bearded, suspendered ...