You need to clear @cfg before pushing items onto it (i.e., simply use a lexical variable): 

sub ban {
    open( CFG, "<", "/etc/squid/squid.conf" );
    my @cfg;    # <--
    while ( <CFG> ) {
        push @cfg, $_;
    }
    ...

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In reply to Re^9: Real time log parser by Eliya
in thread Real time log parser by kazak

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