Better still:

$salt = join '', ('a'..'z','A'..'Z',0..9,'.','/')[rand 64, rand 64] ;
[download]

-Ducky

Update: Ok, took me a year to come back and fix this, but it's fixed the way I'd do it today. =/

That doesn't work. You're taking an array slice (incorrectly), then assigning it to a scalar variable. You want something like this:

my @chars = ('a'..'z', 'A'..'Z', 0..9, '.', '/');
my $salt = join '', @chars[rand @chars, rand @chars];
[download]

Note the "@" before "chars"--that denotes an array slice. And since we're taking an array slice and want to end up with a scalar, we need to do a join.

What if you want to expand the valid characters someday?

@chars=(a..z,A..Z,0..9,'.','/');
 $salt= join '', @chars[rand(@chars), rand(@chars)];
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or even

my $elem = @chars;
$salt = join '', @chars[rand($elem), rand($elem)];
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.
.
.
@chars=(A..Z,a..z,0..9,'.','/');
$salt=$chars[rand(64)].$chars[rand(64)];
.
.
.
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