Sort on two keys


 
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# 8  
Old 07-01-2008
Quote:
Originally Posted by clarcombe
Excellent. That works perfectly


What does the -k4,4n -k5,5r mean. I understand the 4n part but what does the , do?

I modified the command
sort -t '|' -k4n -k5r BPC_TRANS_CHARG000009_000_Anomalie.csv and this works as well

Thanks.

Colin
The -k4,4n -k5,5r first sorts numerically on the fourth field and then sorts on the fifth field in reverse order. The 5th field sort is a sub-sort that is it sorts the 5th field based on the sorted contents of the 4th field.The comma in -k separates the start and stop fields. In -k5r the start field is the 5th one and as no stop field is given it defaults to the end of the line. The sort manpage provides a better explanation.
# 9  
Old 07-02-2008
Quote:
The sort manpage provides a better explanation.
No, I think you are wrong there. Your explanation is far clearer than man sort.

English is my first language, man help is my fifth !!

Many Thanks

Colin
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