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Old 04-10-2008
fedora fedora is offline
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Join Date: Jul 2006
Posts: 94
using sed to get rid of duplicated columns...

I can not figure out this one, so I turn to unix.com for help, I have a file, in which there are some lines containing continuously duplicate columns, like the following

adb abc abc asd adfj
123 123 123 345
234 444 444 444 444 444 23

and the output I want is

adb abc asd adfj
123 345
234 444 23

Is it possible using sed to do this?

oh, btw, I thought this should work,

sed 's/(\([^ ]\)+ )+/\1/' file , but it does not...

Last edited by fedora; 04-10-2008 at 04:53 PM..
 

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