#!/usr/bin/perl

# use POSIX qw/strftime/;
# use strict;
# use warnings;
# use diagnostics;

sub fixdir {
    my $dir = shift;
    opendir my $DH, $dir or die "Not Found....$dir: $!";
    while (my $f = readdir $DH) {
        next if grep $_ eq $f, qw/. ../;
		fixdir("$dir/$f") if -d "$dir/$f";
		
        (my $new = $f) =~ s/[^a-zA-Z0-9_.]/_/g;

		if ($new eq $f) { next; }
		
		while ( -e "$dir/$new") { $new .= "1";  }

        print STDERR "Renaming: $f -> $new\n";
        rename "$dir/$f", "$dir/$new"; 
    }
}

die "No command line arguments given!" unless @ARGV;

my $nargs = @ARGV;
print "Number of command line arguments is $nargs\n";

my $Do_Dir = $ARGV[0];
# print("ARG=", "$Do_Dir", "<<<<<<\n");
if (!$Do_Dir ) {
	print ("No Folder Name given!\n");
	exit; }
print( "The Folder Name is: ", "$Do_Dir", "\n" );
fixdir("$Do_Dir");
print "Done...\n"