unique utils

[nbarger]

Although we have most of the needed coreutils down, it would be nice to have some unique or different ones, or replace others.

For example, we could have a single command that manipulates files and folders, either creating, deleting, renaming, etc.

[CobbCoding1]

maybe implement the standard ones and then potentially add unique ones which can use existing features. (i.e. implement rm, rmdir, and mkdir, then make a special one which combines their functionality with flags and whatnot)