Assumes @output is populated from your source; prints to console:

for (0..9) {
    print $output[rand($#output)] . "\n";
}
[download]

• Printing to your final_output.txt file is left as an exercise for the student (since you've already solved that).
• This is likely to select duplicate_lines to your final file, which is still permitted by your spec (but which -- I think -- is not actually your intent). Search the Monastery for unique or @seen and similar for the many solutions to avoiding duplication.
• There is not need to create an output file (thereby eating cycles and disk space); do your initial selection from the source to an array @output.

---

---

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.