in reply to recursive sub

Problem is, because all of the variables are global, it doensn't unwind...

you have scope issues
here is a quick example to guide you, notice the use of my

#!/usr/bin/perl use strict; my $current = '/usr/local'; my $dir_start = '/home'; print "Current is '$current', starting with '$dir_start'\n\n"; recurse_directory( $dir_start ); print "\nDone.\n\n"; sub recurse_directory { ## variables my $current; my @local_list; ## get the dir we are in $current = $_[0]; ## get contents ## no "." or ".." dirs opendir( CURRENTDIR, "$current" ) or die "Can not open $current: $!"; @local_list = grep !/^\.\.?$/, readdir CURRENTDIR; closedir( CURRENTDIR ) or die "Can not close $current: $!"; ## now loop over the contents foreach my $x ( @local_list ) { my $file = $current . '/' . $x; recurse_directory( $file ) if ( $file -d ); print "$file\n"; } }
there is quite a bit wrong with this snippet, as i am sure will be pointed out, but this should help you with your scope problems.

the in depth differences between global, local, and my variables may be more than you are looking for, but a good place to start is page 189 of the Camel book, 2nd edition( no idea on the page in 3rd edition, sorry )

Will perl for money
JJ Knitis
(901) 756-7693
gt8073a@industrialmusic.com

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Re: Re: recursive sub
by tachyon (Chancellor) on Oct 27, 2001 at 16:05 UTC

    you have scope issues

    and you have symlink and dot file issues ;-) see reply above.

    cheers

    tachyon

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