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perl -MData::Dump -F"\|\s?" -lane "$.==1?next:push@{$h{eval$F[0]=~tr/\ +s//r}},$F[1]}{dd%h" columndata.txt ... 500001, ["Network1", "Network2"], )
perl -MO=Deparse -MData::Dump -F"\|\s?" -lane "$.==1?next:push@{$h{eva +l$F[0]=~tr/\s//r}},$F[1]}{dd%h" columndata.txt ... dd(%h); } -e syntax OK