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shell script to delete duplicate

Comment:

hello. I am new to scripting...so help me guys. I have a table of format: aa 1 1/2/2009 ad 1 3/2/2009 ab 2 2/2/2009 aa 3 2/2/2009 Want to know shell script that gives me o/p as follow: aa 3 2/2/2009 ab 2 2/2/2009 ad 1 3/2/2009 That is first sort on date basis, then remove oldest duplicate from first column (for example aa here, that I removed). Many thnx in advance. -yusuf

CTTY NUL not working

Batch: schedule text file...

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