CSPLIT(1) OpenBSD Reference Manual CSPLIT(1)NAMEcsplit - split files based on context
SYNOPSIScsplit [-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.
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
thereafter:
$ csplit-k - 100 '{19}'
SEE ALSOsed(1), split(1), re_format(7)STANDARDS
The csplit utility is compliant with the IEEE Std 1003.1-2008 (``POSIX'')
specification.
HISTORY
A csplit command appeared in PWB UNIX.
BUGS
Input lines are limited to LINE_MAX (2048) bytes in length.
OpenBSD 4.9 September 3, 2010 OpenBSD 4.9
