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How to delete partial duplicate lines unix

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# 1  
Old 08-02-2010
How to delete partial duplicate lines unix

hi Smilie
I need to delete partial duplicate lines
I have this in a file

and need to leave it like this:

so i need to compare only the first two "colums" colums are separated by ,
any help Smilie
doesn't matter wich line to keep Smilie
# 2  
Old 08-02-2010
sort -u -t, -k1,2

# 3  
Old 08-02-2010
I spent more than 4 hours trying to remove the duplicated lines Smilie
you saved me a lot of work Smilie
just one error
i did for this lines:
but that deleted both lines Smilie

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