Not just linux, of course; any unix (sunos, bsd, macosx, ...) -- and of course a few different ports of unix tools (including a fully function "find" utility) ported to all versions of ms-windows/dos (gnu/cygwin, att research labs, ...)

As for security concerns, you can do: 

open( $fh, "-|", "find", "/start/path", "-type", "d" );
while (<$fh>) {
  ...
}

[download]
That's as portable as perl 5.8.x and the command-line "find" util (i.e., runs anywhere). I actually prefer using this approach over File::Find and its derivatives, because the perl modules tend to go a lot slower on really big directory trees, whereas the compiled "find" util is as fast as you can get.

In reply to Re^2: how to get the all the subdirectories path from the directory by graff
in thread how to get the all the subdirectories path from the directory by sen

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