perl按日期归档日志

帮一上海朋友工厂维护一台freebsd服务器，该服务器上运行着squid等服务。服务器上有一支perl程序会每天定时的切割当天的squid日志，以日期形式保存在某目录下，大体如下：

-rw-r--r--  1 root  wheel   51827130 Aug 20 04:27 20110801.log
-rw-r--r--  1 root  wheel   56598624 Aug 20 04:27 20110802.log
-rw-r--r--  1 root  wheel   66925544 Aug 20 04:27 20110803.log
-rw-r--r--  1 root  wheel   47917440 Aug 20 04:27 20110804.log
-rw-r--r--  1 root  wheel   44134286 Aug 20 04:27 20110805.log
-rw-r--r--  1 root  wheel   43705704 Aug 20 04:27 20110808.log
-rw-r--r--  1 root  wheel   33358662 Aug 20 04:27 20110809.log
-rw-r--r--  1 root  wheel   35820354 Aug 20 04:27 20110810.log
-rw-r--r--  1 root  wheel   48065784 Aug 20 04:27 20110811.log
-rw-r--r--  1 root  wheel   38021175 Aug 20 04:27 20110812.log
-rw-r--r--  1 root  wheel   30382856 Aug 20 04:27 20110813.log
-rw-r--r--  1 root  wheel   11898255 Aug 20 04:27 20110815.log
-rw-r--r--  1 root  wheel   10068232 Aug 20 04:27 20110816.log
-rw-r--r--  1 root  wheel   12431556 Aug 20 04:27 20110817.log
-rw-r--r--  1 root  wheel    6405197 Aug 20 04:27 20110818.log
-rw-r--r--  1 root  wheel    5054207 Aug 20 04:27 20110819.log
-rw-r--r--  1 root  wheel    3455222 Aug 26 04:14 20110821.log
-rw-r--r--  1 root  wheel  124680376 Aug 26 04:14 20110822.log
-rw-r--r--  1 root  wheel  150105140 Aug 26 04:14 20110823.log
-rw-r--r--  1 root  wheel    5183330 Aug 26 04:14 20110824.log
-rw-r--r--  1 root  wheel    6486877 Aug 26 04:14 20110825.log
-rw-r--r--  1 root  wheel    8481735 Sep  2 04:03 20110828.log
-rw-r--r--  1 root  wheel   22789068 Sep  2 04:03 20110829.log
-rw-r--r--  1 root  wheel   68841800 Sep  2 04:03 20110830.log

要求：编写一脚本程序，对该目录中日志以年月的形式进行归档，如201108.tar.gz

代码如下：

#!/usr/bin/perl -w

use strict;
use Shell qw/mv/;
use File::Path qw/remove_tree/; //调用该模块的目的是为了删除归档前的非空目录

my %log;

if ( $< != 0 ) {
   printf "%s","You must run this script as root\n";
}

opendir LOG,'/data/squid_log' or die "$!\n";

while ( my $file = readdir LOG ) {
        chomp $file;
        next unless $file =~ /^(\d{6})\d+/;
        push @{$log{$1}},$file;
}

closedir LOG;

for my $str ( sort keys %log ) {
    my @array = @{$log{$str}};
    mkdir $str,0755;
    my $sh = Shell->new();
    $sh->mv("@array $str");
    system("tar czvf ${str}.tar.gz $str");
    remove_tree("$str",{ verbose => 1,});

}

归档过程：

a 201102
a 201102/20110213.log
a 201102/20110214.log
a 201102/20110218.log
a 201102/20110220.log
a 201102/20110221.log
a 201102/20110222.log
a 201102/20110223.log
a 201102/20110224.log
a 201102/20110225.log
a 201102/20110228.log
unlink 201102/20110213.log
unlink 201102/20110214.log
unlink 201102/20110218.log
unlink 201102/20110220.log
unlink 201102/20110221.log
unlink 201102/20110222.log
unlink 201102/20110223.log
unlink 201102/20110224.log
unlink 201102/20110225.log
unlink 201102/20110228.log
rmdir 201102
……………………………………………………………………

最后归档后的效果：

[/data/squid_log]# ll
total 203762
-rw-r--r--  1 root  wheel  12817056 Sep 16 20:49 201012.tar.gz
-rw-r--r--  1 root  wheel   8170954 Sep 16 20:49 201101.tar.gz
-rw-r--r--  1 root  wheel   8819026 Sep 16 20:49 201102.tar.gz
-rw-r--r--  1 root  wheel  15008666 Sep 16 20:49 201104.tar.gz
-rw-r--r--  1 root  wheel  10950252 Sep 16 20:49 201105.tar.gz
-rw-r--r--  1 root  wheel  70723508 Sep 16 20:50 201106.tar.gz
-rw-r--r--  1 root  wheel  13035446 Sep 16 20:50 201107.tar.gz
-rw-r--r--  1 root  wheel  63533990 Sep 16 20:51 201108.tar.gz
-rw-r--r--  1 root  wheel   5290849 Sep 16 20:51 201109.tar.gz
-rwx------  1 root  wheel       646 Sep 16 17:30 log.pl