You are going to have to open the file and process each item line by line. 
$input = "oldlog";
my $output = "newlog";
open (INPUT,"<$input") || die "$!\n";
open (OUTPUT,">$output") || die "$!\n";
foreach $line (<INPUT>) {
    chomp($line);              # remove newlines or whatever regex
    # do line-by-line processing.
print OUTPUT $line;
}
close INPUT;
close OUTPUT;

[download]
This will open your log file, do something to it line by line and dump the results in another logfile. The regex stuff is the hard part.

In reply to Re: scalable chomping by picabotwo
in thread scalable chomping by xorl

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