Based on "Random Password Generation"

This code illustrates using ruby REXML package. It converts J2EE web application deployment descriptor web.xml into Freemind mindmap document.

Strip HTML Tags From a String

Gets a regular expression that'll search for any regexp pattern specified in the parameters.

I like to have these two methods in my toolbelt, even though it's syntactic sugar, I think it aids clarity.

Copies files from nested folders into one source, flat directory.

Is this file the same as that file? The files may or may not be binary. We could compare the modify dates, or the sizes. But, those are not very accurate to know if a file has really changed.

Introducing MD5 Checksum. We can feed the files into Digest::MD5 in binary mode.

This is a great way to do Incremental Backups.

This is also an easy way to verify checksums when downloading files from the internet which list their MD5 Checksums.

You'll need the Digest::MD5 Perl Module.

Class method to read a binary file and copy it to a byte array.

Use this utility to grab lines from a file. Arguments are the input file, starting ling number and ending line number.

Converts a string representation of a number with any base(binary, octal, decimal, hexadecimal, up to base 36) to a long int.