Copyright 1989 AT&T
Copyright (c) 1992, X/Open Company Limited All Rights Reserved
Portions Copyright (c) 2003, Sun Microsystems, Inc. All Rights Reserved
Sun Microsystems, Inc. gratefully acknowledges The Open Group for permission to reproduce portions of its copyrighted documentation. Original documentation from The Open Group can be obtained online at
http://www.opengroup.org/bookstore/.
The Institute of Electrical and Electronics Engineers and The Open Group, have given us permission to reprint portions of their documentation. In the following statement, the phrase "this text" refers to portions of the system documentation. Portions of this text are reprinted and reproduced in electronic form in the Sun OS Reference Manual, from IEEE Std 1003.1, 2004 Edition, Standard for Information Technology -- Portable Operating System Interface (POSIX), The Open Group Base Specifications Issue 6, Copyright (C) 2001-2004 by the Institute of Electrical and Electronics Engineers, Inc and The Open Group. In the event of any discrepancy between these versions and the original IEEE and The Open Group Standard, the original IEEE and The Open Group Standard is the referee document. The original Standard can be obtained online at http://www.opengroup.org/unix/online.html.
This notice shall appear on any product containing this material.
The contents of this file are subject to the terms of the Common Development and Distribution License (the "License"). You may not use this file except in compliance with the License.
You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE or http://www.opensolaris.org/os/licensing. See the License for the specific language governing permissions and limitations under the License.
When distributing Covered Code, include this CDDL HEADER in each file and include the License file at usr/src/OPENSOLARIS.LICENSE. If applicable, add the following below this CDDL HEADER, with the fields enclosed by brackets "[]" replaced with your own identifying information: Portions Copyright [yyyy] [name of copyright owner]
csplit [-ks] [-f prefix] [-n number] file arg1... argn
The csplit utility reads the file named by the file operand, writes all or part of that file into other files as directed by the arg operands, and writes the sizes of the files.
The following options are supported:
-f prefix
Names the created files prefix00, prefix01, ..., prefixn. The default is xx00 ... xxn. If the prefix argument would create a file name exceeding 14 bytes, an error results. In that case, csplit exits with a diagnostic message and no files are created.
-k
Leaves previously created files intact. By default, csplit removes created files if an error occurs.
-n number
Uses number decimal digits to form filenames for the file pieces. The default is 2.
-s
Suppresses the output of file size messages.
The following operands are supported:
file
The path name of a text file to be split. If file is -, the standard input will be used.
The operands arg1 ... argn can be a combination of the following:
/rexp/[offset]
Create a file using the content of the lines from the current line up to, but not including, the line that results from the evaluation of the regular expression with offset, if any, applied. The regular expression rexp must follow the rules for basic regular expressions. Regular expressions can include the use of '\e/' and '\e%'. These forms must be properly quoted with single quotes, since "\e" is special to the shell. The optional offset must be a positive or negative integer value representing a number of lines. The integer value must be preceded by + or -. If the selection of lines from an offset expression of this type would create a file with zero lines, or one with greater than the number of lines left in the input file, the results are unspecified. After the section is created, the current line will be set to the line that results from the evaluation of the regular expression with any offset applied. The pattern match of rexp always is applied from the current line to the end of the file.
%rexp%[offset]
This operand is the same as /rexp/[offset], except that no file will be created for the selected section of the input file.
line_no
Create a file from the current line up to (but not including) the line number line_no. Lines in the file will be numbered starting at one. The current line becomes line_no.
{num}
Repeat operand. This operand can follow any of the operands described previously. If it follows a rexp type operand, that operand will be applied num more times. If it follows a line_no operand, the file will be split every line_no lines, num times, from that point.
An error will be reported if an operand does not reference a line between the current position and the end of the file.
See largefile(5) for the description of the behavior of csplit when encountering files greater than or equal to 2 Gbyte (2^31 bytes).
Example 1 Splitting and combining files
This example creates four files, cobol00...cobol03.
example% csplit -f cobol filename \e
'/procedure division/' /par5./ /par16./
After editing the split files, they can be recombined as follows:
example% cat cobol0[0-3] > filename
This example overwrites the original file.
Example 2 Splitting a file into equal parts
This example splits the file at 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.
example% csplit -k filename 100 {99}
Example 3 Creating a file for separate C routines
If prog.c follows the normal C coding convention (the last line of a routine consists only of a } in the first character position), this example creates a file for each separate C routine (up to 21) in prog.c.
example% csplit -k prog.c '%main(%' '/^}/+1' {20}
See environ(5) for descriptions of the following environment variables that affect the execution of csplit: LANG, LC_ALL, LC_COLLATE, LC_CTYPE, LC_MESSAGES, and NLSPATH.
The following exit values are returned:
0
Successful completion.
>0
An error occurred.
See attributes(5) for descriptions of the following attributes:
| ATTRIBUTE TYPE | ATTRIBUTE VALUE |
| CSI | Enabled |
| Interface Stability | Standard |
sed(1), split(1), attributes(5), environ(5), largefile(5), standards(5)
The diagnostic messages are self-explanatory, except for the following:
arg - out of range
The given argument did not reference a line between the current position and the end of the file.