root directory 
noun Computing
The directory at the highest level of a hierarchy.What can I do to make a user's directory be like a root directory, where the user just has an access to that directory or subdirectory?...
- To do this, go to the root directory of the source code and execute.
- The installation program on the tested version doesn't yet support long path names, so installation essentially must be off the root directory.
- keep an eye out (or open)
- keep a (or the) lid on
- keep a tight rein on
- keep at (or keep someone at)
- keep away (or keep someone away)
- keep a weather eye on
- keep back (or keep someone/thing back)
- keep body and soul together
- keep cave
- keep company with
- keep count (or a count)
- keep down
- keeper
- keepership
- keep-fit
- keep from (or keep someone from)
- keep goal
- keep going
- keep good (or bad) time
- keep house
- keeping
- keeping place
- keep in with
- keep it real
- keep late (or regular) hours