<s>
NOS/VE	B-Operating_System
(	O
Network	O
Operating	B-General_Concept
System	I-General_Concept
/	O
Virtual	O
Environment	O
)	O
is	O
a	O
discontinued	O
operating	B-General_Concept
system	I-General_Concept
with	O
time-sharing	B-General_Concept
capabilities	O
,	O
written	O
by	O
Control	O
Data	O
Corporation	O
in	O
the	O
1980s	O
.	O
</s>
<s>
It	O
is	O
a	O
virtual	B-Architecture
memory	I-Architecture
operating	B-General_Concept
system	I-General_Concept
,	O
employing	O
the	O
64-bit	B-Device
virtual	O
mode	O
of	O
the	O
CDC	O
Cyber	O
180	O
series	O
computers	O
.	O
</s>
<s>
NOS/VE	B-Operating_System
replaced	O
the	O
earlier	O
NOS	B-Operating_System
and	O
NOS/BE	B-Operating_System
operating	B-General_Concept
systems	I-General_Concept
of	O
the	O
1970s	O
.	O
</s>
<s>
The	O
command	O
shell	O
interface	O
for	O
NOS/VE	B-Operating_System
is	O
called	O
the	O
System	O
Command	O
Language	O
,	O
or	O
SCL	O
for	O
short	O
.	O
</s>
<s>
All	O
standard	O
NOS/VE	B-Operating_System
commands	O
further	O
follow	O
a	O
particular	O
naming	O
convention	O
,	O
where	O
the	O
form	O
of	O
the	O
command	O
is	O
verb{_adjective}_noun;	O
these	O
commands	O
could	O
be	O
abbreviated	O
with	O
the	O
first	O
three	O
characters	O
of	O
the	O
verb	O
followed	O
by	O
the	O
first	O
character(s )	O
of	O
all	O
further	O
words	O
.	O
</s>
<s>
Subsystems	O
like	O
FTP	B-Protocol
integrate	O
into	O
the	O
command	O
shell	O
.	O
</s>
<s>
would	O
connect	O
you	O
to	O
IP	O
address	O
10.1.2.3	O
with	O
telnet	B-Protocol
service	O
.	O
</s>
