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Removing duplicates from log file?

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# 1  
Old 01-21-2009
Removing duplicates from log file?
I have a log file with posts looking like this:
[arrival time]-[message]-[id number]

Messages can be delivered by different systems at different times. The id number is used to sort out duplicate messages. What I need is to strip the arrival time from each post, sort posts by id number, and reattach arrival time to respective post.

Raw data:
Code:
200901211501-hello1-010
200901211504-hello1-010
200901211507-hello2-052
200901211512-hello2-052
200901211522-hello3-713
200901211544-hello4-220
200901211559-hello5-117
200901211612-hello5-117
200901211630-hello5-117

This is what I want to achieve (dupes removed):
Code:
200901211501-hello1-010
200901211507-hello2-052
200901211522-hello3-713
200901211544-hello4-220
200901211559-hello5-117

I've used different combinations of sed and uniq, but I seem to fail.

Grateful for any help.
# 2  
Old 01-21-2009
Use nawk or /usr/xpg4/bin/awk on Solaris if you get errors.

Code:
awk -F- '!a[$2$3]++' file > newfile

Regards
# 3  
Old 01-21-2009
Thank you a lot!
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