csplit(1) USER COMMANDS 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 sec-
tions 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: From the line referenced by argn to the end of file.
If the file argument is a -, then 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.
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). See
ed(1) for a description of how to specify a reg-
ular expression.
%rexp% This argument is the same as /rexp/, except that
no file is created for the section.
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csplit(1) USER COMMANDS csplit(1)
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
user's responsibility to remove it if it is no longer
wanted.
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 fol-
lows:
cat cobol0[0-3] > file
Note that this example overwrites the original file.
csplit -k file 100 {99}
This example splits 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}
If prog.c follows the normal C coding convention (the last
line of a routine consists only of a } in the first charac-
ter position), this example creates a file for each separate
C routine (up to 21) in prog.c.
SEE ALSO
ed(1), sh(1).
DIAGNOSTICS
Self-explanatory except for:
arg - out of range
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csplit(1) USER COMMANDS csplit(1)
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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