<s>
whereis	O
is	O
a	O
command	B-Application
on	O
Unix	B-Application
and	O
Unix-like	B-Operating_System
operating	I-Operating_System
systems	I-Operating_System
used	O
to	O
locate	O
some	O
special	O
files	O
of	O
a	O
command	B-Application
like	O
the	O
binary	O
file	O
,	O
source	O
and	O
manual	B-Protocol
page	I-Protocol
files	O
.	O
</s>
<s>
The	O
whereis	O
man	B-Protocol
page	I-Protocol
provides	O
the	O
following	O
sample	O
usage	O
:	O
</s>
<s>
The	O
Unix	B-Application
type	B-Device
command	B-Application
is	O
similar	O
,	O
but	O
it	O
identifies	O
aliases	O
.	O
</s>
<s>
Modern	O
versions	O
of	O
Microsoft	B-Application
Windows	I-Application
feature	O
a	O
similar	O
command	B-Application
:	O
where	O
.	O
</s>
<s>
The	O
origin	O
may	O
Multics	B-Application
where	O
.	O
</s>
