csplit(1)

Synopsis

Description

00:

From the start of file up to (but not including) the line referenced 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 -, then standard input is used.

csplit processes supplementary code set characters, and recognizes supplementary code set characters in the prefix given to the -f option (see below) according to the locale specified in the LC_CTYPE environment variable (see LANG on environ(5)). In basic regular expressions (BREs), pattern searches are performed on characters, not bytes, as described on ed(1).

The options to csplit are:

-s

csplit normally prints the number of bytes in each file created. If the -s option is present, csplit suppresses the printing of all byte counts.

-k

csplit normally removes created files if an error occurs. If the -k option is present, csplit leaves previously created files intact.

-f prefix

If the -f option is used, the created files are named prefix00 . . . prefixn. The default is xx00 . . . xxn. Supplementary code set characters may be used in prefix.

-n digits

Use digits decimal digits to form filenames for the file pieces. The default is 2.

The arguments (arg1 . . . argn) to csplit can be a combination of the following:

/rexp/

A file is to be created for the section from the current line up to (but not including) the line containing the basic regular expression rexp. The line containing rexp becomes the current line. This argument may be followed by an optional + or - some number of lines (for example, /Page/-5). See ed(1) for a description of how to specify a regular expression.

%rexp%

This argument is the same as /rexp/, except that no file is created for the section.

lnno

A file is to be created from the current line up to (but not including) lnno. lnno becomes the current line.

{num}

Repeat argument. This argument may follow any of the above arguments. If it follows a rexp type 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.

{*}

Repeats previous operand as many times as necessary to finish input.

Enclose all rexp type arguments that contain blanks or other characters meaningful to the shell in the appropriate quotes. Basic regular expressions may not contain embedded new-lines. csplit does not affect the original file; it is the user's responsibility to remove it if it is no longer wanted.

Examples

This example creates four files, cobol00 . . . cobol03. After editing the ``split'' files, 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 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.

csplit -k prog.c '%main(%´ '/^}/+1' {20}

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.

Files

/usr/lib/locale/locale/LC_MESSAGES/uxdfm

language-specific message file (See LANG on environ(5).)

References

Diagnostics

arg - out of range

arg does not reference a line between the current position and the end of the file.