[Command] whereis filename [Description and/or Example] Finds filename and says where it is using the internal data base, that must be updated. updatedb updates it. [Area] 
files
d a e m o n s
f i l e s
i m a g e
n e t w o r k
s o u n d
s y s t e m
s y t e m
t i m e
u s e r s
X