Re: monitoring directory for new subdirectories

[CSJewell]

That seems a little "brute-force", but other methods will depend on the OS: Win32, Mac/Unixy, or who-knows-what? I'll admit not knowing about anything but Win32 on that level.

Win32 provides monitoring API calls (FindFirstChange(), FindNextChangeNotification() and SHChangeNotifyRegister() all look like things to try.) You may have to code that part in XS, and other people would have more knowledge about specifics than I would (I remember using the FindXChangeNotification API calls in a C++ program a few years back.)

[incognito129]

the script is running in debian 4.0

[almut]

Linux::Inotify2.  Some sample code to get you started: Inotify2 findings.

Update: more (and specific) sample code:

#!/usr/bin/perl

use Linux::Inotify2;

my $inotify = Linux::Inotify2->new()
   or die "unable to create new inotify object: $!";

$inotify->watch(
    "/tmp",     # directory to watch
    IN_CREATE,  # flags
    sub {       # callback routine
        my $evt = shift;
        my $name = $evt->fullname;
        if (-d $name) {
            print "directory $name has been created\n";
        }
    }
);

1 while $inotify->poll;

__END__
$ stty -tostop   # just in case
$ ./753790.pl &
[1] 2590
$ mkdir /tmp/somedir
directory /tmp/somedir has been created
$

[incognito129]

any other options? Make fails for Linux::Inotify2 on my system, not sure why.