It could be a good idea to split the big regex.
A good example: if you want to match lines with the words 'red' and 'dog'.
The first idea is often to write something like: $line =~ /red.*dog|dog.*red/
but there is a better way: $line=~/dog/ and $line=~/red/
So, it's probably better to treat each exclusion with one regex: next if /regex/;
while (my $line = <DATA>) {
next if $line =~ /^ERROR.*?Error processing Cancel Execution/;
next if $line =~ /ERROR.*?license will expire/;
print "Do something with the line: $line";
}
__DATA__
ERROR 2012-04-02 05:00:18 Error processing Cancel Execution '2012-CSNY
+1CMR-1-20120402-1247 52938803o122h090000507' with LHDRSeqId 'CSNY1CMR
+1-1333315812780-2759'.
[2012-04-02 07:04:27,275][ERROR][101574:Company:japan][analytics.bond.
+BondAlibImpl] ALIB license will expire in29 days. Please upgrade lice
+nse file under /app/license
2012-04-02 05:00:18,810[ERROR] limitCheck: error while checking instru
+ction xxx.core.biz.order.instruction.EquityOrderSubmitInstruction(tsI
+d=20120402-090237887-340-509,order=20120402-090237880-767-508:TS)
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