How to read last lines from file?

Hello guys, I am writing a log parser script, i've got the problemm please look: I want to print the lines from big file that were added for last 5 minutes my scenario: 1. read the file from the end untill date in file < current date on 300 secs:

# tac /var/log/biglog |  perl -ne 'print; exit 0 if (($DateCurrent -$D
+ate) > 300 );'
[download]

where $DateCurrent - current date in unix timestamp: date +%s $Date - the date from log file, but the problem here is that it has format that I cannot convert to unixtimestamp for compare:

# tail -3 biglog
78.49.150.102 - - [01/Nov/2011:00:53:01 +0600] "GET /mem.png HTTP/1.1"
+ 200 51883 "http://net.com/" "Opera/9.80 (Windows NT 6.1; U; ru) Pres
+to/2.9.168 Version/11.52"
78.49.150.102 - - [01/Nov/2011:00:53:01 +0600] "GET /cpu.png HTTP/1.1"
+ 200 42875 "http://net.com/" "Opera/9.80 (Windows NT 6.1; U; ru) Pres
+to/2.9.168 Version/11.52"
78.49.150.102 - - [01/Nov/2011:00:53:01 +0600] "GET /traf.png HTTP/1.1
+" 200 48121 "http://net.com/" "Opera/9.80 (Windows NT 6.1; U; ru) Pre
+sto/2.9.168 Version/11.52"
[download]

any ideas?

Original content restored above by GrandFather

thanks, guys!

Comment on How to read last lines from file? Select or Download Code
Re: How to read last lines from file? by moritz (Cardinal) on Nov 02, 2011 at 13:12 UTC
Go to http://search.cpan.org/ and search for a module that does it for you. There are many date and time related modules that can help you, and File::ReadBackwards can do the "read from the end" part. Perl 6 - second systems done right	[reply]
Re: How to read last lines from file? by keszler (Priest) on Nov 02, 2011 at 13:14 UTC
`>perl -E "use Date::Parse;say scalar gmtime str2time('01/Nov/2011:00:5 +3:01 +0600');" Mon Oct 31 18:53:01 2011` [download]	[reply] [d/l]
Re: How to read last lines from file? by jethro (Monsignor) on Nov 02, 2011 at 13:15 UTC
How about using Time::Local to convert the date to unix timestamp.	[reply]
Re: How to read last lines from file? by zentara (Archbishop) on Nov 02, 2011 at 17:04 UTC
`#!/usr/bin/perl -w use strict; use File::Tail; my $log = "/usr/local/apache2/logs/access_log"; my $file=File::Tail->new ( name=>$log, interval=>2, maxinterval=>10 ); while (defined(my $line=$file->read)) { print "$line"; }` [download] I'm not really a human, but I play one on earth. Old Perl Programmer Haiku ................... flash japh	[reply] [d/l]


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