Hello all, I just started learning Perl and I get stuck on a basic file processing :

I have to convert a file format, the program should read a input file and after processing (which counts the number of each term in each group, see below), yield a output file. Here is the format of the input file:

Group1: somo|112345478 somo|734567233 homo|233689876

Group2: somo|904686712 somo|891145662 somo|106736432

Group3: aomo|397634567 aomo|123446789

Group4: aomo|905672345 aomo|120846789

........

..

From the above input, the output file should look like (the numbers after the pipe should not be considered):

somo homo aomo

Group1 2 1 0

Group2 3 0 0

Group3 0 0 2

Group4 0 0 2

I get stuck on this file conversion for sometime now and unable to figure it out. Any guidance is highly appreciated. Thanks in advance.. Apologies if this post doesn't belong here...

---

---

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.