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Full Discussion: Copying Text between two unique text patterns
Top Forums UNIX for Dummies Questions & Answers Copying Text between two unique text patterns Post 302119187 by drl on Monday 28th of May 2007 03:15:15 PM
Old 05-28-2007
Hi.

For the sample data file "data1":
Code:
Document * of 20
Hello

=====
Document one of 20

World

=====
Document 44 of 20

Now is

=====
Document "Climatology Review" in of 20

with no Documents at the beginning of the time.

=====

I ran this script:
Code:
#!/bin/sh

# @(#) s1       Demonstrate csplit.

F=${1-data1}

csplit -k -s -z $F "/^Document.*of/" {\*}

echo
for file in xx*
do
        echo
        echo "File: $file"
        head -3 $file |
        cat -n
done

exit 0

To produce this:
Code:
% ./s1


File: xx00
     1  Document * of 20
     2  Hello
     3

File: xx01
     1  Document one of 20
     2
     3  World

File: xx02
     1  Document 44 of 20
     2
     3  Now is

File: xx03
     1  Document "Climatology Review" in of 20
     2
     3  with no Documents at the beginning of the time.

This assumes that the lines "=====" are visual sugar ... cheers, drl
 

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LEARN ABOUT DEBIAN

snsplit

snsplit,v0.3.8(8)					      System Manager's Manual						 snsplit,v0.3.8(8)

NAME

       snsplit - split an article stream into individual articles

SYNOPSIS

       snsplit [-r] [field... -] prog...

DESCRIPTION

       snsplit	reads  an  article stream from descriptor 0 and splits it into separate articles, invoking prog...  on each, with the article ava-
       iable on descriptor 0.  This is useful as a quick-and-dirty way of filtering an article stream.

       The incoming article stream is expected to be in wire format, with lines ending in CRLF, leading dots doubled, and delimited by a dot on  a
       line by itself.

       The  article  presented	to  prog...  will have lines that end in a bare newline, will have all header lines unfolded, leading dots will be
       unstuffed, and the article will be terminated by end-of-file.

ARGUMENTS

       prog...
	      is the program (with arguments) to run on each article.  If prog...  exits with any kind of failure, snsplit aborts.

       field...-
	      are optional header field names.	If these are specified, the value of the first header field of that name will be exported into the
	      environment.  This field...  list must be terminated by the hyphen.  See also ENVIRONMENT below.

OPTIONS

       -r     Expect input articles in rnews batch format instead.

ENVIRONMENT

       snsplit sets some environment variables.  If the environment already contains these variables, they will be overwritten.

       SEQUENCE
	      If  already set to a positive value, it is incremented for the first article.  If it isn't set, is set to one for the first article.
	      Thereafter it is incremented for each subsequent article.  The value is always a 6-digit number with leading zeroes, and it can roll
	      over.

       BYTES  contains the size of the current article.

       HEAD_LINES
	      The number of lines in the head of the article, excluding the blank separator line.

       BODY_LINES
	      The number of lines in the body of the article, excluding the blank separator line.

       FLD_FIELD
	      If  any  fields are specified on the command line, where field is the name of an article header field, then FLD_FIELD will be set to
	      the value of field, where FIELD is the same as field but with lower case characters changed to upper case, and all  hyphens  changed
	      to  underscores.	 Confusing?  If field is message-id, then FLD_MESSAGE_ID will be set to the value of the first Message-ID field in
	      the current article, if there is one.

EXIT CODES

       snsplit exits 0 on success, 1 on usage error, 2 on system error, and 3 on article format error.	If  prog...   exits  with  other  than	0,
       snsplit will also exit that value.

N.B.								    Harold Tay							 snsplit,v0.3.8(8)
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