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Top Forums Shell Programming and Scripting Split a file into multiple files based on field value Post 302650295 by manasvi24 on Saturday 2nd of June 2012 08:07:13 AM
Old 06-02-2012
Split a file into multiple files based on field value

Hi,

I've one requirement. I have to split one comma delimited file into multiple files based on one of the column values.

How can I achieve this Unix

Here is the sample data. In this case I have split the files based on date column(c4)

Input file

Code:
c1,c2,c3,c4,c5
123,GL,JE,06-02-2012,500
132,GL,JE,06-02-2012,600
123,GL,JE,06-01-2012,500
153,GL,JE,06-01-2012,600

Desired out put

File 1
Code:
c1,c2,c3,c4,c5
123,GL,JE,06-02-2012,500
132,GL,JE,06-02-2012,600

File2

Code:
c1,c2,c3,c4,c5
123,GL,JE,06-01-2012,500
153,GL,JE,06-01-2012,600

Thanks

Moderator's Comments:
Mod Comment edit by bakunin: First off, when posting code or terminal output please use [CODE]..[/CODE]-tags. Thank you.

Second, you are posting in the wrong forum. Even if you have this problem sitting at an AIX system it is clearly not related with the OS but a simple scripting problem. I am going to transfer this thread to "Shell Programming and Scripting".

Last edited by bakunin; 06-03-2012 at 06:33 AM..
 

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RAKE(1) 						 Ruby Programmers Reference Guide						   RAKE(1)

NAME
rake -- Ruby Make SYNOPSIS
rake [--f Rakefile] [--version] [-CGNPgnqstv] [-D [PATTERN]] [-E CODE] [-I LIBDIR] [-R RAKELIBDIR] [-T [PATTERN]] [-e CODE] [-p CODE] [-r MODULE] [--rules] [variable=value] target ... DESCRIPTION
Rake is a simple ruby(1) build program with capabilities similar to the regular make(1) command. Rake has the following features: o Rakefiles (Rake's version of Makefiles) are completely defined in standard Ruby syntax. No XML files to edit. No quirky Makefile syntax to worry about (is that a tab or a space?). o Users can specify tasks with prerequisites. o Rake supports rule patterns to synthesize implicit tasks. o Flexible FileLists that act like arrays but know about manipulating file names and paths. o A library of prepackaged tasks to make building rakefiles easier. OPTIONS
--version Display the program version. -C --classic-namespace Put Task and FileTask in the top level namespace -D [PATTERN] --describe [PATTERN] Describe the tasks (matching optional PATTERN), then exit. -E CODE --execute-continue CODE Execute some Ruby code, then continue with normal task processing. -G --no-system --nosystem Use standard project Rakefile search paths, ignore system wide rakefiles. -I LIBDIR --libdir LIBDIR Include LIBDIR in the search path for required modules. -N --no-search --nosearch Do not search parent directories for the Rakefile. -P --prereqs Display the tasks and dependencies, then exit. -R RAKELIBDIR --rakelib RAKELIBDIR --rakelibdir RAKELIBDIR Auto-import any .rake files in RAKELIBDIR. (default is rakelib ) -T [PATTERN] --tasks [PATTERN] Display the tasks (matching optional PATTERN) with descriptions, then exit. -e CODE --execute CODE Execute some Ruby code and exit. -f FILE --rakefile FILE Use FILE as the rakefile. -h --help Prints a summary of options. -g --system Using system wide (global) rakefiles (usually ~/.rake/*.rake ). -n --dry-run Do a dry run without executing actions. -p CODE --execute-print CODE Execute some Ruby code, print the result, then exit. -q --quiet Do not log messages to standard output. -r MODULE --require MODULE Require MODULE before executing rakefile. -s --silent Like --quiet, but also suppresses the 'in directory' announcement. -t --trace Turn on invoke/execute tracing, enable full backtrace. -v --verbose Log message to standard output (default). --rules Trace the rules resolution. SEE ALSO
ruby(1) make(1) http://rake.rubyforge.org/ REPORTING BUGS
Bugs, features requests and other issues can be logged at <http://onestepback.org/redmine/projects/show/rake>. You will need an account to before you can post issues. Register at <http://onestepback.org/redmine/account/register>. Or you can send an email to the author. AUTHOR
Rake is written by Jim Weirich <jim@weirichhouse.org> UNIX
November 7, 2012 UNIX
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