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Full Discussion: Read text between regexps and write into files based on a field in the text
Top Forums Shell Programming and Scripting Read text between regexps and write into files based on a field in the text Post 302864625 by r3d3 on Wednesday 16th of October 2013 10:59:42 PM
Old 10-16-2013
Read text between regexps and write into files based on a field in the text
Hi,

I have a huge file that has data something like shown below:

huge_file.txt
Code:
start regexp
Name=Name1
Title=Analyst
Address=Address1
Department=Finance
end regexp
some text 
some text
start regexp
Name=Name2
Title=Controller
Address=Address2
Department=Finance
end regexp
some text 
some text
start regexp
Name=Name3
Title=Associate
Address=Address3
Department=Marketing
end regexp
some text
some text

I can extract the records between the start and end regular expressions using either Awk or Sed. It will really help me if I can read these records and write them into multiple files named after the Department, so they can be reviewed rather quickly.

Output I am expecting is -

Finance.txt
Code:
start regexp
Name=Name1
Title=Analyst
Address=Address1
Department=Finance
end regexp

start regexp
Name=Name2
Title=Controller
Address=Address2
Department=Finance
end regexp

Marketing.txt
Code:
start regexp
Name=Name3
Title=Associate
Address=Address3
Department=Marketing
end regexp

I thought using single command line as follows would work, but clearly I am missing something.
Code:
cat huge_file.txt | sed -n '/start regexp/,/end regexp/p' | tee record_buffer | grep Department | awk -F\= '{print $2}' | xargs cat record_buffer > {}

I think the problem was that output from sed is not single record but rather all the records between regexps. Any suggestions?
 

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LEARN ABOUT DEBIAN

xmlstarlet

XMLSTARLET(1)							 xmlstarlet Manual						     XMLSTARLET(1)

NAME

       xmlstarlet - command line XML/XSLT toolkit

SYNOPSIS

       xmlstarlet [<options>] [<command>] [<cmd-options>]

INTRODUCTION

       XMLStarlet is a set of command line utilities (tools) which can be used to transform, query, validate, and edit XML documents and files us-
       ing simple set of shell commands in similar way it is done for plain text files using UNIX grep, sed, awk, diff, patch, join, etc commands.
       This  set of command line utilities can be used by those who deal with many XML documents on UNIX shell command prompt as well as for auto-
       mated XML processing with shell scripts.

OPTIONS

       --version
	      Display the version of xmlstarlet.

       --help Display help.

COMMANDS

       Type: xmlstarlet <command> --help <ENTER> for command help

       Available commands include:

       ed (or edit)
	      Edit/update XML document(s).

       sel (or select)
	      Select data or query XML document(s) (XPATH, etc).

       tr (or transform)
	      Transform XML documents(s) using XSLT.

       val (or validate)
	      Validate XML document(s) (well-formed/DTD/XSD/RelaxNG).

       fo (or format)
	      Format XML document(s).

       el (or elements)
	      Display element structure of XML document.

       c14n (or canonic)
	      XML canonicalization.

       ls (or list)
	      List directory as XML.

       esc (or escape)
	      Escape special XML characters.

       unesc (or unescape)
	      Unescape special XML characters.

       pyx (or xmln)
	      Convert XML into PYX format (based on ESIS - ISO 8879).

       p2x (or depyx)
	      Convert PYX into XML.

REFERENCES

       XMLStarlet is a command line  toolkit  to  query/edit/check/transform  XML  documents  (for  more  information  see  http://xmlstar.source-
       forge.net/).

AUTHOR

       Mikhail Grushinskiy.

																     XMLSTARLET(1)
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