Repeat line convert upper line

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# 8  
Old 10-05-2013
One more approach

$ awk '{printf(!_[$2]++)?$0 FS:($1=$2="")$0 RS}' test.txt

R3 AV44 50 0 100 100 1 0 100 100 100
R3 AV45 50 0 100 100 0 3 100 100 100
R3 AV45S 50 0 100 100 0 4 100 100 100

Last edited by Akshay Hegde; 10-05-2013 at 01:30 PM..
This User Gave Thanks to Akshay Hegde For This Post:
# 9  
Old 10-05-2013
That's nice: assignment in conditional assignement!
# 10  
Old 10-05-2013
And a sed version:
sed 'N; s/\n *[^ ]* *[^ ]*//'  file

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