csplit man page on FreeBSD

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CSPLIT(1)		  BSD General Commands Manual		     CSPLIT(1)

NAME
     csplit — split files based on context

SYNOPSIS
     csplit [-ks] [-f prefix] [-n number] file args ...

DESCRIPTION
     The csplit utility splits file into pieces using the patterns args.  If
     file is a dash (‘-’), csplit reads from standard input.

     Files are created with a prefix of “xx” and two decimal digits.  The size
     of each file is written to standard output as it is created.  If an error
     occurs whilst files are being created, or a HUP, INT, or TERM signal is
     received, all files previously written are removed.

     The options are as follows:

     -f prefix
	     Create file names beginning with prefix, instead of “xx”.

     -k	     Do not remove previously created files if an error occurs or a
	     HUP, INT, or TERM signal is received.

     -n number
	     Create file names beginning with number of decimal digits after
	     the prefix, instead of 2.

     -s	     Do not write the size of each output file to standard output as
	     it is created.

     The args operands may be a combination of the following patterns:

     /regexp/[[+|-]offset]
	     Create a file containing the input from the current line to (but
	     not including) the next line matching the given basic regular
	     expression.  An optional offset from the line that matched may be
	     specified.

     %regexp%[[+|-]offset]
	     Same as above but a file is not created for the output.

     line_no
	     Create containing the input from the current line to (but not
	     including) the specified line number.

     {num}   Repeat the previous pattern the specified number of times.	 If it
	     follows a line number pattern, a new file will be created for
	     each line_no lines, num times.  The first line of the file is
	     line number 1 for historic reasons.

     After all the patterns have been processed, the remaining input data (if
     there is any) will be written to a new file.

     Requesting to split at a line before the current line number or past the
     end of the file will result in an error.

ENVIRONMENT
     The LANG, LC_ALL, LC_COLLATE and LC_CTYPE environment variables affect
     the execution of csplit as described in environ(7).

EXIT STATUS
     The csplit utility exits 0 on success, and >0 if an error occurs.

EXAMPLES
     Split the mdoc(7) file foo.1 into one file for each section (up to 20):

	   csplit -k foo.1 '%^\.Sh%' '/^\.Sh/' '{20}'

     Split standard input after the first 99 lines and every 100 lines there‐
     after:

	   csplit -k - 100 '{19}'

SEE ALSO
     sed(1), split(1), re_format(7)

STANDARDS
     The csplit utility conforms to IEEE Std 1003.1-2001 (“POSIX.1”).

HISTORY
     A csplit command appeared in PWB UNIX.

BUGS
     Input lines are limited to LINE_MAX (2048) bytes in length.

BSD			       December 24, 2008			   BSD
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