寻找监视目录以创建新文件或删除文件的方法。
所以,如果我有一个文件夹c:\ temp,并且如果在此复制/创建了一个abc.txt,我想要一个事件或其他东西,以便我可以拿起该文件然后处理它。
另外,我想要连续监控这个文件夹。我怎样才能做到这一点。我正在写一个完成所有这些工作的服务。我想在一个脚本中加入监控和处理。
提前致谢。
答案 0 :(得分:3)
答案在这里:In Perl, how can I watch a directory for changes?
对于Linux:
use File::ChangeNotify;
my $watcher = File::ChangeNotify->instantiate_watcher(
directories => [ 'archive/oswiostat' ],
filter => qr/\Aoracleapps[.].*dat\z/,
);
while (my @events = $watcher->wait_for_events) {
# ...
}
我认为您使用的是Windows,因此您必须使用Win32 :: ChangeNotify
示例来自:http://www.perlmonks.org/?node_id=306175
use strict;
use Win32::ChangeNotify;
our $PATH ||= '.';
our $S = defined $S ? 1 : 0;
my $notify = Win32::ChangeNotify->new( $PATH, $S, 'FILE_NAME' );
my %last; @last{ glob $PATH . '/*' } = ();
while( 1 ) {
print('Nothing changed'), next
unless $notify->wait( 10_000 ); # Check every 10 seconds
$notify->reset;
print 'Something changed';
my @files = glob $PATH . '/*';
if( @files < scalar keys %last ) {
delete @last{ @files };
print 'These files where deleted: ';
print for keys %last;
}
elsif( @files > scalar keys %last ) {
my %temp;
@temp{ @files } = ();
delete @temp{ keys %last };
print 'These files where created: ';
print for keys %temp;
}
else {
print "A non-deletion or creation change occured";
}
undef %last;
@last{ @files } = ();
}