Two small things:

# Check if a destination is defined
unless (defined $destination) {   
    showUsage ();
}
[download]

I would like an improved error message here, like

# Check if a destination is defined
unless (defined $destination) {   
    print "No destination given.\n";
    showUsage ();
}
[download]

And at the place where you run rsync, you capture all of its (voluminous) output just to print it out right afterwards:

# Run the program and show the output
my @result;
@result = `$cmd 2>&1`;
foreach my $result (@result) {
        print $result;
        chomp $result;
}
[download]

I would change that to simply use system instead, which will do the printing directly. This would also add error checking so your script signals if the underlying rsync failed:

# Run the program and show the output
system( "$cmd 2>&1") == 0
    or die "rsync failed: $! / $?";
[download]

Of course, if you really want/need to do post-processing of the rsync output, as your chomp indicates, you will need to capture the output as you did.

---

---

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! —

• How do I compose an effective node title?
• How do I post a question effectively?
• Markup in the Monastery

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:
	&		&
	<		&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.