<s>
Eunice	B-Operating_System
was	O
a	O
Unix-like	B-Operating_System
working	O
environment	O
for	O
VAX	B-Device
computers	O
running	O
DEC	O
's	O
VAX/VMS	B-Operating_System
,	O
based	O
on	O
the	O
BSD	B-Operating_System
version	O
of	O
Unix	B-Application
.	O
</s>
<s>
1981	O
by	O
David	O
Kashtan	O
at	O
SRI	O
,	O
and	O
later	O
maintained	O
and	O
marketed	O
by	O
The	B-Operating_System
Wollongong	I-Operating_System
Group	I-Operating_System
.	O
</s>
<s>
Eunice	B-Operating_System
was	O
one	O
of	O
several	O
Unix	B-Application
compatibility	O
packages	O
developed	O
during	O
the	O
1980s	O
.	O
</s>
<s>
It	O
provided	O
VMS	B-Operating_System
binary	O
versions	O
of	O
Unix	B-Application
tools	O
,	O
a	O
VMS	B-Operating_System
object	O
library	O
emulating	O
the	O
Unix	B-Application
API	B-Application
(	O
including	O
the	O
system	B-Operating_System
call	I-Operating_System
interface	O
)	O
and	O
an	O
assembler	B-Language
that	O
produced	O
VMS	B-Operating_System
binaries	O
.	O
</s>
<s>
Eunice	B-Operating_System
was	O
criticized	O
for	O
its	O
performance	O
problems	O
and	O
not	O
quite	O
complete	O
Unix	B-Application
compatibility	O
.	O
</s>
<s>
Eunice	B-Operating_System
's	O
reputation	O
for	O
poor	O
compatibility	O
inspired	O
the	O
"	O
Congratulations	O
.	O
</s>
<s>
You	O
are	O
n't	O
running	O
Eunice.	O
"	O
</s>
<s>
message	O
included	O
in	O
the	O
Perl	B-Language
configure	B-Device
script	I-Device
.	O
</s>
