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Top Forums Shell Programming and Scripting Combine a datafile with Master datafile, emergent! Post 302117107 by onthetopo on Thursday 10th of May 2007 09:18:24 PM
Old 05-10-2007
Combine a datafile with Master datafile, emergent!

Hi guys, my supervisor has asked me to solve the problem in 7 days, I've taken 3 days to think about it but couldn't figure out any idea.
Please give me some thoughts with the following problem,

I have index.database that has only index date:
1994
1995
1996
1997
1998
1999

I have small.database.csv that contains data for some of the indexed dates but not all of them:

1995, california, A3,B6
1999, vermont, A4,B9

I want to match the small.database.csv into index.database into a combined.database.csv so it would look like:

1994,,,
1995, california, A3,B6
1996,,,
1997,,,
1998,,,
1999, vermont, A4,B9

shell scripts or perl would both be fine

Thanks a lot.
My supervisor is after me on this one.
 

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MAKEDBZ(8)						      System Manager's Manual							MAKEDBZ(8)

NAME
makedbz - rebuild dbz files SYNOPSIS
makedbz [ -f filename ] [ -i ] [ -o ] [ -s size ] DESCRIPTION
Makedbz rebuilds dbz(3) database. The default name of the text file is <pathdb in inn.conf>/history; to specify a different name, use the ``-f'' flag. OPTIONS
-f If the ``-f'' flag is used, then the database files are named file.dir , file.index and file.hash. If the ``-f'' flag is not used, then a temporary link to the name history.n is made and the database files are written as history.n.index , history.n.hash and his- tory.n.dir. -i To ignore the old database use the ``-i'' flag. Using the ``-o'' or ``-s'' flag implies the ``-i'' flag. -o If the ``-o'' flag is used, then the link is not made and any existing history files are overwritten. If the old database exists, makedbz will use it to determine the size of the new database. -s The program will also ignore any old database if the ``-s'' flag is used to specify the approximate number of entries in the new database. Accurately specifying the size is an optimization that will create a more efficient database. (The size should be the estimated eventual size of the file, typically the size of the old file.) For more information, see the discussion of dbzfresh and dbzsize in dbz(3). HISTORY
Written by Katsuhiro Kondou <kondou@nec.co.jp> for InterNetNews. This is revision 1.1, dated 1999/08/27. SEE ALSO
dbz(3), history(5), inn.conf(5). MAKEDBZ(8)
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