The “git add” command is fundamental to using Git. It is how we add files to the staging area to be committed. But which files get added? Well, that is up to us. In this video, we will look at the different options for using the add command and how we can use it to add the exact files we would like to the staging area.
Git is the most popular version control system out there and for good reason. In this video, we’ll go over the basics of what git is and how to use it within the command-line. There are several GUI tools out there to help you get started with git, but it can be extremely beneficial to learn git from the command-line as early as possible. Let’s get started.
A big hurdle a lot of people face when learning to use the terminal is the fact that it feels slow compared to navigating around in Finder or other GUIs. Using the terminal doesn’t have to feel slow. Once you learn a few keyboard shortcuts, it can greatly increase the speed at which you can navigate and run commands within the command line.
In this video we’ll be going over some of the keyboard shortcuts I use on a daily basis.
If you navigate from your terminal frequently, you have most likely run into the scenario where you are within a project directory and want to open a file or folder from that project. It is a pain to open up Finder, navigate to the project, and open the file or directory that way. Being able to open these projects and files from the terminal is much more convenient and saves a lot of time. In this video we’ll look at how we can do just that:
The line that links the “subl” command to /usr/local/bin/ is as follows:
ln -s /Applications/Sublime\ Text.app/Contents/SharedSupport/bin/subl /usr/local/bin/sublIn this video, we will take an in-depth look at Python’s package management system, pip. We’ll walk through how to install, uninstall, list, and upgrade packages. We will also dive into how we can output our dependencies and install a list of dependencies.
An in-depth knowledge of pip can be a great addition to your Python tool-belt.
Here is a look at some of the code used in this tutorial:
Install a package
pip install <package_name>Uninstall a package
pip uninstall <package_name>Output installed packages to a requirements file.
pip freeze > requirements.txtInstall all packages from a requirements file
pip install -r <name_of_requirements_file>List installed packages
pip listList installed packages that need updated
pip list --outdatedUpgrade a package
pip install -U <package_name>Upgrade all packages (source)
pip freeze --local | grep -v '^\-e' | cut -d = -f 1 | xargs -n1 pip install -UIn this video, we will be looking at virtualenv and why you should be using virtual environments in Python. Virtual Environments in Python allow us to keep project-specific dependencies in a separate place than our global site-packages. This is extremely useful when you have different versions of packages for different projects.
Here’s a brief walkthrough of some of the code from the video:
Install virtualenv
pip install virtualenvCreate a location for your environments (Optional)
mkdir ~/Environments
cd ~/EnvironmentsCreate a new virtual environment (called venv for this example)
virtualenv venvActivate your new virtual environment
source venv/bin/activateAt this point you can work from inside of your new virtual environment and know that you are keeping your project-specific packages and dependencies separate.
When you are finished, you can deactivate your virtual environment
deactivateIf you no longer need your environment and would like to delete it, you can just remove the directory
rm -rf venvOne problem I run into frequently is needing to resize multiple images at once. To do this manually would take way too much time, especially if you have a lot of images.
Luckily, there are several good tools out the to automate this process for us. In this video we will be resizing multiple images using the Mac Terminal and the built-in “sips” command.
If you are someone who is more comfortable using an application rather than the terminal, I also have a video on resizing multiple images using Google’s Picasa. You can find that video here. With that said, in this video we will be focusing on the Mac Terminal. Let’s get started:
In this quick tip, we’re going to look at how to create aliases for common terminal commands. If you find yourself typing in the same commands over and over, then it is a good indication that you should write an alias for that. For example, I used to frequently switch to my website’s local theme directory using the command:
cd ~/vagrant-local/www/CoreyMS/htdocs/wp-content/themes/simone-coreymsThat’s a pain to type time and time again! In this video, I’ll show you how you can set up your terminal so that you can create shortcuts for these frequent commands. Then you can create aliases that are unique to you and your workflow. Let’s get started: