thanks, but in the loop of read input file, "if ($pins1 =~ /^$key$/) ", the dollar sign, $ will have to be removed too. I forget to mention that for the pins/ports name, it has expression like this symbol, [], which means that it cant be cathed when using ur way. This is the only weak point. 
For example, c4a_123[3]

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In reply to Re^4: Wildcard in a hash by DespacitoPerl
in thread Grep asterisk sign in input file by DespacitoPerl

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