open SwitchLogs, $logFile or die "Could not open $logFile: $!"; 
while (<SwitchLogs>) {
    chomp;
    my $line = $_;
    if($line =~ m/PHY-4-EXCESSIVE_ERRORS/){            
		push(@err, "$line\n");
		s/PHY-4-EXCESSIVE_ERRORS/PHY_4_EXCESSIVE-ERRORS/g;
        $sendemail = 1;
    }
}
close SwitchLogs;