Implement fold
STATUS: move hash to N/A This is a shell builtin
Implemented pwd
Implement tee
Implement echo The behaviour of echo command is to print exactly as the arguments are, unless -n is in which the escape chars are recognized.
Implement nohup
Implement sleep
Implement env
Add dirname
Implement rmdir
Implement head
Implement comm
Implement logname Implementation of the getlogin(3) function tend to be terrible in C libraries, but the POSIX standard requires that logname uses it.
Implement link
Implement tty
Implement nice
STATUS: mark unlink as done
STATUS: move talk/write out of scope These are part of the User Portable Utilities option.
Implement cmp
Implement cksum
Formalize definition of scope