I want to find certain files in my system (OS X) and create symbolic links to them. For this, I use File::Find. I want to make sure, not to link to the same file twice. So I dont follow links (follow => 0). But what if I want to rerun the process later and don't want to create all the links already present a second time? Is it sufficient to collect, in a first run, all the devicenumbers and inodes of the existing links in my targetdirectory like this: 

my %stat;
find ( sub {
        my($dev,$ino)= stat $File::Find::name;
        ++$stat{$dev}->{$ino};
}, $targetdirectory);

[download]

and then later check like this: 

find( {
    wanted => sub {
        :
        :
        # check whether or not we already know of this file
        my($dev,$ino)= stat $File::Find::name;
        return if $stat{$dev}->{$ino}++;
        :
        :
    },
    no_chdir => 1,
    follow => 0,
}, '/');

[download]
s$$([},&%#}/&/]+}%&{})*;#$&&s&&$^X.($'^"%]=\&(|?*{%
+.+=%;.#_}\&"^"-+%*).}%:##%}={~=~:.")&e&&s""`$''`"e

In reply to stat to identify files? by Skeeve

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