CSPLIT(C) XENIX System V CSPLIT(C)
Name
csplit - Splits files according to context.
Syntax
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.
The options to csplit are:
-scsplit normally prints the character counts for
each file created. If the -s option is present,
csplit suppresses the printing of all character
counts.
-kcsplit 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.
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
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CSPLIT(C) XENIX System V CSPLIT(C)
(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
quotation marks. Regular expressions may not contain
embedded newlines. csplit does not affect the original
file; it is the user's 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
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 and
that main() is the first function in proc.c this example
will create a file containing each separate C routine (up to
21) in prog.c.
See Also
ed(C), sh(C), regex(S)
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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