As a network administrator, you are probably already very familiar with the ARP protocol. ARP is commonly used by layer two devices in order to discover as well as communicating with each other easily. When you are dealing with a small office network, you might be tempted to ping hosts in order to verify that…

Docker images are a big part of the Docker ecosystem. Docker images are used to define instructions to be executed on your containers. On Docker images, you may choose to have a specific operating system, to install specific packages or to execute a set of predefined commands. However, if you create multiple environments or multiple…

As a developer, you are probably pushing your code to your remote origin every day. Git is a decentralized versioning system : even if you make changes locally, you have to push them to the central repository on a regular basis. However, in some cases, you might choose to migrate your Git repository or to…

Copying directories on Linux is a big part of every system administrator routine. If you have been working with Linux for quite some time, you know how important it is to keep your folders well structured. In some cases, you may need to copy some directories on your system in order revamp your main filesystem…

On Git, tags are used in order to define commits in your history that may be more important than others. When you are performing a merge commit, right before deploying, you might want to tag this commit. This way, if you choose to go back to the previous version, you will be able to find…