alvin's blog

How to convert a DRM-protected song to an MP3

I've never bought any DRM protected (digital rights management) music, so although it's a well-known fact among techies, I didn't know until recently that you can burn DRM songs to a standard CD. The implication here is that once you've burned the DRM-protected song to CD, you can then rip it back as an MP3 file, which is the part that blows me away. Not much protection there, other than "security through obscurity".

Rule number one for software project managers

Here's my Rule #1 for Project Managers, as looked at from the perspective of a software developer:

Show active interest in your project, and in the people that work on the project.

Okay, I know that seems obvious -- and I'm a little fired up about this right now -- but I've been amazed to work with project managers in the last few years who seem to have more important things to do outside of work than they have to do at work, and by this I only mean during the Monday through Friday, 8-to-5 time frame.

Examples of the Unix mkdir command

Linux directory FAQ: How do I create (make) a directory on Linux or Unix?

The Unix/Linux mkdir command is used to create new Unix/Linux directories (sub-directories). Let's take a look at some mkdir command examples.

How to create one directory

This first example creates a new directory named tmp in your current directory:

mkdir tmp

This example assumes that you have the proper permissions to create a new sub-directory in your current working directory.

Linux cd command examples

Linux FAQ: Can you share some cd command examples?

The Linux cd command stands for "change directory". It is the primary command for moving between directories on a Unix/Linux filesystem.

Examples of the cd command

This first command moves you to the /usr directory. The /usr directory becomes your current working directory:

cd /usr

Similarly, this cd command moves you to the /tmp directory:

Use the Linux df command to show free disk space

Linux free disk space FAQ: How do I show free disk space on a Unix or Linux system?

The Linux df command stands for "disk free". It is meant to show Linux disk space information, including disk space that is used, disk space remaining, and how filesystems are mounted on your Linux (or Unix) system. The Linux df command not only shows the free disk space on your local computer, it also shows the free disk space on all networked filesystems that are mounted by your Linux system.

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