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  #6 (permalink)  
Old 05-26-2009
devtakh devtakh is offline
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Join Date: Oct 2007
Location: Bangalore
Posts: 514

Code:
 awk '
NR==1{p1=$1;p2=$2;getline;printf("(%s-%s)%s(%s-%s)\n",p1,$2,OFS,p2,$1);q1=$1;q2=$2;next}
{printf("(%s-%s)%s(%s-%s)\n",q1,$2,OFS,q2,$1);q1=$1;q2=$2}' file


-Devaraj Takhellambam