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  #4 (permalink)  
Old 10-13-2008
summer_cherry summer_cherry is offline Forum Advisor  
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Join Date: Jun 2007
Location: Beijing China
Posts: 1,092
awk:


Code:
nawk 'BEGIN{FS="|"}
{
if(NR==FNR)
	a[$3]=0
else
{
	a[$3]++
	if(a[$3]>=2)
		print "#"$0
	else
		print $0
}
}' 1.txt 2.txt