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Top Forums Shell Programming and Scripting Sort data by date and then search by column Post 302808485 by samrat dutta on Thursday 16th of May 2013 09:28:57 PM
Old 05-16-2013
Sort data by date and then search by column

Hi,
I have a file where data is pipe separated.First i want to sort the file content by date . Then i want to pick up the records based on the first column which should be unique and not have duplicates.

NYSE|yyyrrrddd|toronto|isin|ticker|2013-05-15
UKS|yyyrrrddd|toronto|isin|ticker|2013-05-14
BSE|yyyrrrddd|toronto|isin|ticker|2013-05-13
HKS|yyyrrrddd|toronto|isin|ticker|2013-05-14
TSX|yyyrrrddd|toronto|isin|ticker|2013-05-16
NYSE|yyyrrrddd|toronto|isin|ticker|2013-05-15
BSE|yyyrrrddd|toronto|isin|ticker|2013-05-15

First i would like to sort by date and get the latest ones. Secondly there should be no duplicates and hence my output should be like this :

TSX|yyyrrrddd|toronto|isin|ticker|2013-05-16
NYSE|yyyrrrddd|toronto|isin|ticker|2013-05-15
BSE|yyyrrrddd|toronto|isin|ticker|2013-05-15
UKS|yyyrrrddd|toronto|isin|ticker|2013-05-14
UKS|yyyrrrddd|toronto|isin|ticker|2013-05-14

Any help with the relevant script is requested.
 

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BSE(5)								BEAST Manual Pages							    BSE(5)

NAME
BSE - Better Sound Engine File Format SYNOPSIS
filename.bse DESCRIPTION
The bse file format is used by the BSE library and dependent programs to save BSE projects, songs, instruments and sample collections. The BSE scheme shell bsescm(1) is able to play back bse files directly. FORMAT
BSE files start out with a special magic string "; BseProject0 and then contain nested expressions in scheme syntax using the ASCII charset. Binary data may be appended to a .bse file if it is seperated from the preceeding ASCII test by one or more literal NUL charac- ters (' '). This mechanism is used to store arbitrary binary data like .WAV or Ogg/Vorbis files in BSE projects, while keeping the actuall content user editable (text editors that preserve binary sections have to be used, such as vi(1) or emacs(1)). COMPATIBILITY
The exact format and sets of objects and properties used in a bse file depend highly on the library version that was used to save the file. Compatibility functions are supplied by the library itself, so old bse files can be converted when the file is loaded. To enable this mechanism, all bse files contain a "bse-version" directive which indicates the bse file format version of the supplied content. SEE ALSO
beast(1), bsescm(1), BSE Object Reference (http://beast.testbit.eu/bse-objects) beast-0.7.3 2011-04-08 02:30:18 +0200 BSE(5)
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