csplit(1)csplit(1)Namecsplit - context split
Syntaxcsplit [ -s ] [ -k ] [ -f prefix ] file arg1 [ ...argn ]
Description
The command reads file and separates it into n+1 sections, as defined
by the arguments arg1...argn. By default, the sections are placed in
xx00...xxn (n may not be greater than 99). The named file is sectioned
in the following way:
00: From the start of file up to (but not including) the line refer‐
enced by arg1.
01: From the line referenced by arg1 up to the line referenced by
arg2.
.
.
.
n: From the line referenced by argn to the end of file.
If the file argument is a minus (-) then standard input is used. A
minus is an ASCII octal 055.
Options-s Suppresses the printing of all character counts.
If the -s option is omitted, the command prints the
character counts for each file created.
-k Leaves previously created files intact. If the -k
option is omitted, automatically removes created
files if an error occurs.
-fprefix Names the created files prefix00...prefixn. The
default is xx00...xxn.
The arguments (arg1...argn) to can be a combination of the following:
/rexp/[offset] A file is created for the section from the
current line up to (but not including) the
line containing the regular expression rexp.
The current line becomes the line containing
rexp. The optional offset is plus (+) or
minus (-) the number of lines. For example,
/Page/-5.
%rexp%[offset] This argument is the same as /rexp/[offset],
except that no file is created for the sec‐
tion.
lnno A file is created from the current line up to
(but not including) lnno. The current line
becomes lnno.
{num} Repeat argument. This argument may follow
any of the above arguments. If it follows a
rexp argument, that argument is applied num
more times. If it follows lnno, the file
will be split every lnno lines (num times)
from that point.
Enclose all rexp type arguments that contain blanks or other characters
meaningful to the Shell in the appropriate quotes. Regular expressions
should not contain embedded new-lines. The command does not affect the
original file; it is the user's responsibility to remove it.
Examplescsplit-f cobol file /procedure division/ /par5./ /par16./
This example creates four files, cobol00...cobol03. After editing the
files that created, they can be recombined as follows:
cat cobol0[0-3] > file
Note that this example overwrites the original file.
csplit-k file 100 {99}
This example splits the file every 100 lines, up to 10,000 lines. The
-k option causes the created files to be retained if there are less
than 10,000 lines; however, an error message would still be printed.
csplit-k prog.c ′%main(%′ ′/^}/+1′ {20}
Assuming that follows the normal C coding convention of ending routines
with a right brace (}) at the beginning of the line, this example cre‐
ates a file containing each separate C routine (up to 21) in
Diagnostics
The diagnostics are self explanatory except for the following:
arg - out of range
This message means that the given argument did not reference a line
between the current position and the end of the file.
See Alsoed(1), sh(1)csplit(1)
