File::Find traverses a directory tree and calls the wanted function for each directory entry found. Inside the wanted function, you can use lstat or stat or one of the -X functions to decide if you want to process that directory entry. Example:
#!/usr/bin/perl
use strict;
use warnings;
use File::Find;
find(
{
wanted => sub {
return unless -l $File::Find::name;
print "Found a symlink: $File::Find::name\n";
}
},
'.'
);
File::Find comes with a script named find2perl. You invoke it like find, but instead of traversing directories, it writes perl code for performing the directory traversal using File::Find to STDOUT. The generated code is not pretty, may have some unused parts, but it generally works:
/tmp>find2perl . -type l
#! /usr/bin/perl -w
eval 'exec /usr/bin/perl -S $0 ${1+"$@"}'
if 0; #$running_under_some_shell
use strict;
use File::Find ();
# Set the variable $File::Find::dont_use_nlink if you're using AFS,
# since AFS cheats.
# for the convenience of &wanted calls, including -eval statements:
use vars qw/*name *dir *prune/;
*name = *File::Find::name;
*dir = *File::Find::dir;
*prune = *File::Find::prune;
sub wanted;
# Traverse desired filesystems
File::Find::find({wanted => \&wanted}, '.');
exit;
sub wanted {
my ($dev,$ino,$mode,$nlink,$uid,$gid);
(($dev,$ino,$mode,$nlink,$uid,$gid) = lstat($_)) &&
-l _
&& print("$name\n");
}
Alexander
--
Today I will gladly share my knowledge and experience, for there are no sweeter words than "I told you so". ;-)
-
Are you posting in the right place? Check out Where do I post X? to know for sure.
-
Posts may use any of the Perl Monks Approved HTML tags. Currently these include the following:
<code> <a> <b> <big>
<blockquote> <br /> <dd>
<dl> <dt> <em> <font>
<h1> <h2> <h3> <h4>
<h5> <h6> <hr /> <i>
<li> <nbsp> <ol> <p>
<small> <strike> <strong>
<sub> <sup> <table>
<td> <th> <tr> <tt>
<u> <ul>
-
Snippets of code should be wrapped in
<code> tags not
<pre> tags. In fact, <pre>
tags should generally be avoided. If they must
be used, extreme care should be
taken to ensure that their contents do not
have long lines (<70 chars), in order to prevent
horizontal scrolling (and possible janitor
intervention).
-
Want more info? How to link
or How to display code and escape characters
are good places to start.