Update: The location of the perl script is available in $O. To get its directory, use dirname from the File::Basename module: 
use File::Basename qw(dirname);
my $script_dir = dirname($0);
my $path = "$script_dir/Pandoras Box/$file.txt";
...

[download]

Original response:

The current working directory can always be referred to as . (a single dot), so there is no need to call the cwd command. It appears that you are just trying to do this: 

chomp(my $file =uc(<STDIN>));
my $path = "./Pandoras Box/$file.txt";
open FILE, '>>', $path or die "unable to append to $path: $!";
...

[download]
Note that the append mode designator '>>' comes before the path name (preferably as a separate argument), and I can't think of why you would need double forward slashes.

Indeed, in this case specifing the current working directory with . is not even necessary: 

my $path = "Pandoras Box/$file.txt";
...

[download]

In reply to Re: Changing directories by pc88mxer
in thread Changing directories by Anonymous Monk

Title:
Use:  <p> text here (a paragraph) </p>
and:  <code> code here </code>
to format your post, it's "PerlMonks-approved HTML":


  • Posts are HTML formatted. Put <p> </p> tags around your paragraphs. Put <code> </code> tags around your code and data!
  • Titles consisting of a single word are discouraged, and in most cases are disallowed outright.
  • Read Where should I post X? if you're not absolutely sure you're posting in the right place.
  • Please read these before you post! —
  • Posts may use any of the Perl Monks Approved HTML tags:
    a, abbr, b, big, blockquote, br, caption, center, col, colgroup, dd, del, details, div, dl, dt, em, font, h1, h2, h3, h4, h5, h6, hr, i, ins, li, ol, p, pre, readmore, small, span, spoiler, strike, strong, sub, summary, sup, table, tbody, td, tfoot, th, thead, tr, tt, u, ul, wbr
  • You may need to use entities for some characters, as follows. (Exception: Within code tags, you can put the characters literally.)
            For:     Use:
    & &amp;
    < &lt;
    > &gt;
    [ &#91;
    ] &#93;
  • Link using PerlMonks shortcuts! What shortcuts can I use for linking?
  • See Writeup Formatting Tips and other pages linked from there for more info.