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ser1zw/Q7

Created April 5, 2014 11:13
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Q7
for f1 in `ls * | sort`; do for f2 in `ls * | grep -v $f1`; do echo $f1 $f2; done; done | awk '{if(TABLE[$1$2]!=1&&TABLE[$2$1]!=1) { TABLE[$1$2]=1; TABLE[$2$1]=1; print $0} }'
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