Re^5: how to move the folder from one directory to another directory?

It is a very simple solution. All you need to do is read an original directory. Then read your new directory. Then If new directory does not contain a file/folder in original directory, then copy it.

Here is what i came up with a sec ago:

use strict;
use warnings;

use File::Copy::Recursive qw(rcopy);
use File::Slurp;
use Cwd;

my $cwd = cwd();

my $dir = $ARGV[0];

my $orig_dir = "$cwd/$dir";
my $new_dir  = "$cwd/your/path/";

my @first_scan = read_dir($orig_dir);    #this will build an initial l
+ist
                                         #and put it into @first_scan;
re_scan();

sub re_scan {                            #to rescan over and over whil
+e comparing

    my @new_scan = read_dir($new_dir);

    foreach my $element (@first_scan) {
        if ( $element ~~ @new_scan ) {
            print "$element Already Exists!\n";
        }
        else {
            print "Copying $element to $new_dir\n";
            rcopy( $orig_dir . $element, $new_dir . $element );
        }
    }
    undef(@first_scan);

    for (@new_scan) {
        push( @first_scan, $_ );
    }
    
    undef(@new_scan);
    sleep(3);
    ;
    re_scan();

}
[download]

This should work for your scenario as you just need to scan the directory, and if the new directory does not contain somethign that the old dir has in it, it copies it.

Comment on Re^5: how to move the folder from one directory to another directory? Download Code

Replies are listed 'Best First'.
Re^6: how to move the folder from one directory to another directory? by marto (Cardinal) on Dec 28, 2014 at 09:22 UTC
Beware File::Slurp.	[reply]
Re^7: how to move the folder from one directory to another directory? by james28909 (Deacon) on Dec 28, 2014 at 09:42 UTC
Yeah most of the time i dont read a complete file into memory anyway, and in the given example, it uses file copy recursive. File slurp does not do anything except make reading a directory easier and so far it hasnt given me unexpected results (not saying it never will though).	[reply]
Re^6: how to move the folder from one directory to another directory? by Anonymous Monk on Dec 28, 2014 at 16:50 UTC
This code will also fill up the stack as `re_scan` calls itself endlessly (Perl should even have warned you about "Deep recursion"). I'd really recommend you read up on recursion (e.g. Modern Perl: Recursion) and how to turn it into iteration, for example here: `http://www.refactoring.com/catalog/replaceRecursionWithIteration.html`	[reply] [d/l] [select]
Re^7: how to move the folder from one directory to another directory? by james28909 (Deacon) on Dec 28, 2014 at 23:14 UTC
I think i understand what your saying. I could put all this into an endless loop and not call sub functions (recurse) over and over. Is that what you mean?	[reply]
Re^8: how to move the folder from one directory to another directory? by Anonymous Monk on Dec 28, 2014 at 23:20 UTC
In this case yes, exactly. The case in the other thread is a little bit different, which is why I'd still recommend reading up on recursion.	[reply]
Re^9: how to move the folder from one directory to another directory? by james28909 (Deacon) on Dec 28, 2014 at 23:35 UTC