General Todo:
 Clean up the filesystem functions in process.rs
 User and group id handling
 Core dumps
 Better teletype handling
 Keyboard driver
 Mouse driver
 Unix sockets
 Check for execution privelages
 Add access syscall
 Better proc filesystem implementation
 Add fstat syscall
 Add lstat syscall

Utilities Todo:
 grep
 rm
 cp
 mv
 file
 chmod
 head
 tail
 more
 date
 diff
 wc
 kill
 hex
 time