<s>
The	O
csplit	B-Device
command	B-Application
in	O
Unix	B-Application
and	O
Unix-like	B-Operating_System
operating	I-Operating_System
systems	I-Operating_System
is	O
a	O
utility	O
that	O
is	O
used	O
to	O
split	B-Application
a	O
file	B-Operating_System
into	O
two	O
or	O
more	O
smaller	O
files	O
determined	O
by	O
context	O
lines	O
.	O
</s>
<s>
csplit	B-Device
is	O
part	O
of	O
the	O
X/Open	O
Portability	O
Guide	O
since	O
issue	O
2	O
of	O
1987	O
.	O
</s>
<s>
It	O
was	O
inherited	O
into	O
the	O
first	O
version	O
of	O
POSIX	O
and	O
the	O
Single	O
Unix	B-Application
Specification	O
.	O
</s>
<s>
It	O
first	O
appeared	O
in	O
PWB	O
UNIX	B-Application
.	O
</s>
<s>
The	O
version	O
of	O
csplit	B-Device
bundled	O
in	O
GNU	B-Application
coreutils	I-Application
was	O
written	O
by	O
Stuart	O
Kemp	O
and	O
David	O
MacKenzie	O
.	O
</s>
<s>
The	O
command	B-Application
is	O
available	O
as	O
a	O
separate	O
package	O
for	O
Microsoft	B-Application
Windows	I-Application
as	O
part	O
of	O
the	O
UnxUtils	B-Application
collection	O
of	O
native	B-Language
Win32	B-Library
ports	O
of	O
common	O
GNU	B-Operating_System
Unix-like	B-Operating_System
utilities	O
.	O
</s>
<s>
The	O
command-syntax	O
is	O
:	O
</s>
<s>
The	O
patterns	O
may	O
be	O
line	B-Application
numbers	I-Application
or	O
regular	B-Language
expressions	I-Language
.	O
</s>
<s>
The	O
program	O
outputs	O
pieces	O
of	O
the	O
file	B-Operating_System
separated	O
by	O
the	O
patterns	O
into	O
files	O
xx00	O
,	O
xx01	O
,	O
etc.	O
,	O
and	O
outputs	O
the	O
size	O
of	O
each	O
piece	O
,	O
in	O
bytes	B-Application
,	O
to	O
standard	O
output	O
.	O
</s>
<s>
As	O
with	O
most	O
Unix	B-Application
utilities	I-Application
,	O
a	O
return	B-Application
code	I-Application
of	O
0	O
indicates	O
success	O
,	O
while	O
nonzero	O
values	O
indicate	O
failure	O
.	O
</s>
<s>
The	O
split	B-Application
command	B-Application
also	O
splits	O
a	O
file	B-Operating_System
into	O
pieces	O
,	O
except	O
that	O
all	O
the	O
pieces	O
are	O
of	O
a	O
fixed	O
size	O
(	O
measured	O
in	O
lines	O
or	O
bytes	B-Application
)	O
.	O
</s>
