Today's post may seem like a step back for regular readers, but I like to keep this blog accessible, so I've decided to revisited the Perl unpack function to demonstrate how it can be used in one of its simplest forms on either Linux or Unix. A more advanced example can be found in our previous post on taking a look inside the wtmpx file.
The Perl script we're presenting today only consists of one simple unpack function surrounded by a whole bunch of processing code. If certain parts were modularized, this would make a decent simple function in a greater calculator/conversion script.
Notice that when we use the unpack value to convert a binary number, say: