And of course, the proper way to do this is to use File::Find. Yours improperly follows symlinks, which means you could get in to an infinite loop if the symlink points to a directory somewhere upward in the tree.

Using proper technology, your code becomes simply: 

use File::Find;
finddepth sub {
  return if /^\./;
  my $new = lc $_;
  return if $new eq $_ or -e $new;
  rename $_, $new or warn "Cannot rename $File::Find::name to $File::F
+ind::dir/$new: $!";
}, $ARGV[0] || ".";

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-- Randal L. Schwartz, Perl hacker
Be sure to read my standard disclaimer if this is a reply.

In reply to •Re: problems returning from recursive subroutine by merlyn
in thread problems returning from recursive subroutine by melguin

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