Another way of writing the command loop...
If the user doesn't enter a non-blank line, then just a simple reprompt is usually sufficient - they figure out why you are asking the question again very quickly! Also as a general rule for the command line, leading and trailing white space is allowed. 
#!/usr/bin/perl -w
use strict;

while ( (print "Enter Directory for saving: "), 
         my $input = <STDIN> )
{
   next if $input =~ /^\s*$/; # simple reprompt if blank line
   $input =~ s/^\s*//;        # trim leading blanks
   $input =~ s/\s*$//;        # trim trailing blanks
                              # also does an implicit "chomp"   
                        
   if (-d $input)
   {
      print "DirectoryPath: $input already exists!\n";
      next;  #this causes a reprompt..
   }
   
   print "processing directory $input\n";
   last;
}

[download]

In reply to Re: Verifying If a directory exists by Marshall
in thread Verifying If a directory exists by edimusrex

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.