170 lines
4.2 KiB
Groff
170 lines
4.2 KiB
Groff
.\" Copyright (c) 2002 Tim J. Robbins.
|
|
.\" All rights reserved.
|
|
.\"
|
|
.\" Redistribution and use in source and binary forms, with or without
|
|
.\" modification, are permitted provided that the following conditions
|
|
.\" are met:
|
|
.\" 1. Redistributions of source code must retain the above copyright
|
|
.\" notice, this list of conditions and the following disclaimer.
|
|
.\" 2. Redistributions in binary form must reproduce the above copyright
|
|
.\" notice, this list of conditions and the following disclaimer in the
|
|
.\" documentation and/or other materials provided with the distribution.
|
|
.\"
|
|
.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
|
|
.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|
.\" ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
|
|
.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
|
.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
|
.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
|
.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
|
.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
|
.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
|
.\" SUCH DAMAGE.
|
|
.\"
|
|
.\" $FreeBSD$
|
|
.\"
|
|
.Dd December 24, 2008
|
|
.Dt CSPLIT 1
|
|
.Os
|
|
.Sh NAME
|
|
.Nm csplit
|
|
.Nd split files based on context
|
|
.Sh SYNOPSIS
|
|
.Nm
|
|
.Op Fl ks
|
|
.Op Fl f Ar prefix
|
|
.Op Fl n Ar number
|
|
.Ar file args ...
|
|
.Sh DESCRIPTION
|
|
The
|
|
.Nm
|
|
utility splits
|
|
.Ar file
|
|
into pieces using the patterns
|
|
.Ar args .
|
|
If
|
|
.Ar file
|
|
is
|
|
a dash
|
|
.Pq Sq Fl ,
|
|
.Nm
|
|
reads from standard input.
|
|
.Pp
|
|
Files are created with a prefix of
|
|
.Dq 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
|
|
.Dv HUP ,
|
|
.Dv INT ,
|
|
or
|
|
.Dv TERM
|
|
signal is received,
|
|
all files previously written are removed.
|
|
.Pp
|
|
The options are as follows:
|
|
.Bl -tag -width indent
|
|
.It Fl f Ar prefix
|
|
Create file names beginning with
|
|
.Ar prefix ,
|
|
instead of
|
|
.Dq Pa xx .
|
|
.It Fl k
|
|
Do not remove previously created files if an error occurs or a
|
|
.Dv HUP ,
|
|
.Dv INT ,
|
|
or
|
|
.Dv TERM
|
|
signal is received.
|
|
.It Fl n Ar number
|
|
Create file names beginning with
|
|
.Ar number
|
|
of decimal digits after the prefix,
|
|
instead of 2.
|
|
.It Fl s
|
|
Do not write the size of each output file to standard output as it is
|
|
created.
|
|
.El
|
|
.Pp
|
|
The
|
|
.Ar args
|
|
operands may be a combination of the following patterns:
|
|
.Bl -tag -width indent
|
|
.It Xo
|
|
.Sm off
|
|
.Cm / Ar regexp Cm / Op Oo Cm + | - Oc Ar offset
|
|
.Sm on
|
|
.Xc
|
|
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
|
|
.Ar offset
|
|
from the line that matched may be specified.
|
|
.It Xo
|
|
.Sm off
|
|
.Cm % Ar regexp Cm % Op Oo Cm + | - Oc Ar offset
|
|
.Sm on
|
|
.Xc
|
|
Same as above but a file is not created for the output.
|
|
.It Ar line_no
|
|
Create containing the input from the current line to (but not including)
|
|
the specified line number.
|
|
.It Cm { Ns Ar num Ns Cm }
|
|
Repeat the previous pattern the specified number of times.
|
|
If it follows a line number pattern, a new file will be created for each
|
|
.Ar line_no
|
|
lines,
|
|
.Ar num
|
|
times.
|
|
The first line of the file is line number 1 for historic reasons.
|
|
.El
|
|
.Pp
|
|
After all the patterns have been processed, the remaining input data
|
|
(if there is any) will be written to a new file.
|
|
.Pp
|
|
Requesting to split at a line before the current line number or past the
|
|
end of the file will result in an error.
|
|
.Sh ENVIRONMENT
|
|
The
|
|
.Ev LANG , LC_ALL , LC_COLLATE
|
|
and
|
|
.Ev LC_CTYPE
|
|
environment variables affect the execution of
|
|
.Nm
|
|
as described in
|
|
.Xr environ 7 .
|
|
.Sh EXIT STATUS
|
|
.Ex -std
|
|
.Sh EXAMPLES
|
|
Split the
|
|
.Xr mdoc 7
|
|
file
|
|
.Pa foo.1
|
|
into one file for each section (up to 20):
|
|
.Pp
|
|
.Dl "csplit -k foo.1 '%^\e.Sh%' '/^\e.Sh/' '{20}'"
|
|
.Pp
|
|
Split standard input after the first 99 lines and every 100 lines thereafter:
|
|
.Pp
|
|
.Dl "csplit -k - 100 '{19}'"
|
|
.Sh SEE ALSO
|
|
.Xr sed 1 ,
|
|
.Xr split 1 ,
|
|
.Xr re_format 7
|
|
.Sh STANDARDS
|
|
The
|
|
.Nm
|
|
utility conforms to
|
|
.St -p1003.1-2001 .
|
|
.Sh HISTORY
|
|
A
|
|
.Nm
|
|
command appeared in PWB UNIX.
|
|
.Sh BUGS
|
|
Input lines are limited to
|
|
.Dv LINE_MAX
|
|
(2048) bytes in length.
|