Additionally to moritz's correct answer, I'll caution that you are unlikely to experience a huge difference in processing time by parallelizing the input operation. IO is limited by the disk speed, and turning a single process reading in one file at a time into several processes that read these files in parallel will likely affect performance detrimentally, because the disk head has to constantly jump to a new position while reading in. So, unless you have a very unusual drive configuration (or weird limits set on your single process by the OS), this will probably slow down the entire process, rather than speeding it up.

Also, reading in the file into an array in a forked child and then printing that array in the parent won't work, data structures don't remain shared in a forked process, you need some form of IPC for that.

---

---

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.