pash

A not-quite-POSIX shell for Unix systems.

This was an assignment. It is now a labor of love. Hence, pash.

Development dependencies

A C compiler
Valgrind advanced dynamic profiler; a memory leak's worst nightmare.
GNU Make for compilation automation.

C and UNIX Library Commands of Note

I've listed them below in the form necessary to look them up in the system manual

man 3 getenv For accessing environment variables.
man 3 setenv For setting environment variables.
man 3 freopen For reifying streams for redirection.
man 3 fprint For printing to streams other than stdout.
posix_spawn A possible way to easily run stuff in background.