Creating a lock file (say, in /tmp) is a common approach. On launch, check to see if the file already exists. If it does, exit. Otherwise, create it and continue. This can lead to problems if your app ...

A lot of people come to Linux because they think it's magic, but they also make a lot of mistakes. Here are some things you want to avoid if you want to get the most out of Linux. Thinking Linux is ...

If you are a Pythonista or a data scientist, you’ve probably used Jupyter. If you haven’t, it is an interesting way to work with Python by placing it in a Markdown document in a web browser. Part ...