CSPLIT(1) (Directory and File Management Utilities) CSPLIT(1)
NAME
csplit - context split
SYNOPSIS
csplit [-s] [-k] [-f prefix] file arg1 [... argn]
DESCRIPTION
csplit reads file and separates it into n+1 sections,
defined by the arguments arg1... argn. By default, the
sections are placed in xx00 ... xxn (n may not be greater
than 99). These sections get the following pieces of file:
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+1: From the line referenced by argn to the end of
file.
If the file argument is a -, standard input is used.
The options to csplit are:
-s csplit normally prints the character counts
for each file created. If the -s option is
present, csplit suppresses the printing of
all character 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.
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CSPLIT(1) (Directory and File Management Utilities) CSPLIT(1)
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 regular expression rexp.
The current line becomes the line containing
rexp. This argument may be followed by an
optional + or - some number of lines (e.g.,
/Page/-5).
%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. The current
line becomes lnno.
{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.
Enclose all rexp type arguments that contain blanks or other
characters meaningful to the shell in the appropriate
quotes. Regular expressions may not contain embedded new-
lines. csplit does not affect the original file; it is the
users responsibility to remove it.
EXAMPLES
csplit -f cobol file '/procedure division/' /par5./ /par16./
This example creates four files, cobol00 ... cobol03. After
editing the ``split'' files, they can be recombined as
follows:
cat cobol0[0-3] > file
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Note that this example overwrites the original file.
csplit -k file 100 {99}
This example would split 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}
Assuming that prog.c follows the normal C coding convention
of ending routines with a } at the beginning of the line,
this example will create a file containing each separate C
routine (up to 21) in prog.c.
SEE ALSO
ed(1), sh(1), split(1).
regexp(5) in the Programmer's Reference Manual.
DIAGNOSTICS
Self-explanatory except for:
arg - out of range
which means that the given argument did not reference a line
between the current position and the end of the file.
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