If you're lucky your timestamps are fixed width and you can use substr.
my $ts_fmt = 'MMM DD HH:MM:SS ';
my $line = 'Feb 18 00:12:14 foo bar bat baz fwa';
my $time = substr($line, 0, length $ts_fmt, '');
chop $time; # pesky space..
# $time is the time part.
# $line holds the part after the time is removed.
If you're searching for fixed string, index might be faster than regex.
my $match = 'fwa';
if ( -1 != index($line,$match)) {
# matched!
$seen_lines{$line}++;
}
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