Set up development environment: Linux
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In this lab you’ll find walkthroughs on how to install a set of common development tools on an Ubuntu Desktop 18.0.4 workstation or latest.
- Install a basic development toolset on your local workstation
- Verify the tools are all working as expected
Step 1: Ubuntu specific preparation
To use Linux as your development environment, you should have a good graphical desktop interface setup.
- The standard/default Ubuntu desktop environment for Ubuntu 18.04 LTS is Gnome Shell, but…this is Linux – you have choices!
- Now your workstation should startup and provide a GUI login to a desktop environment
- Install some basic Linux tools and utilities
sudo apt install curl
sudo apt install libssl-dev
# (equivalent to openssl-dev on other distributions)
(wget is already installed, so we do not need to install it)
- Install the typical developer tools and utilities (For example the GCC C/C++ compiler):
sudo apt install build-essential
Step 2: Source control systems
- Git needs to be installed as a separate package, but is easily done:
sudo apt install git
Let us verify Git is working as expected:
- Open a terminal
- From within the terminal, run:
You should get output indicating the version of git installed:
# Example output
git version 2.17.1
- Attempt to clone a repository from GitHub:
git clone https://github.com/RSTForum/knowledgebase.git # Expected Output Cloning into remote: Counting objects: 11, done. remote: Total 11 (delta 0), reused 0 (delta 0), pack-reused 11 Unpacking objects: 100% (11/11), done.
Step 3: Python and Node.js
Python 3 is the recommended version of Python.
Note: Python 2 is no longer supported. As of January 1st, 2020 no new bug reports, fixes, or changes will be made to Python 2. You can read Python 2 instructions in the appendix to this Lab, but it is not required or recommended.
You may already have Python 3 installed. Verify your Python installation by running this command at the terminal prompt:
python3 #Expected output Python 3.6.9 (default, Nov 7 2019, 10:44:02) [GCC 8.3.0] on linux Type "help", "copyright", "credits" or "license" for more information >>>
1. If Python3 is not installed, you can install it:
sudo apt install python3
2. Verify Python3 was correctly installed:
cd ~ python3 -V # Expected Output Python 3.6.9
Python virtual environments
Before leaving the Python setup, you need to know how to create a Python virtual environment. Python virtual environments are a method of creating isolated “environments” where specific versions of Python can be installed along with independent sets of libraries and dependencies.
Virtual environment usage is very common and is recommended practice when working in Python, and most DevNet labs encourage you to create and work within virtual environments.
1, First download and install the Python 3 virtual environment package.
sudo apt install python3-virtualenv
2. Create a Python 3 virtual environment using the virtualenv module.
python3 -m venv py3-venv
3. Now “activate” the environment. Look for the name of the virtual environment to be enclosed in parenthesis after activation.
# Expected Output
(py3-venv) [timmc@ubuntu ~]$
4. Now verify that python is now linked to Python 3.
5. Deactivate the virtual environment.
Step 4: Nodejs
There are two different Node.js options when installing. It’s possible to use the distro-stable package with APT, or to branch out and use version-specific versions of Node.js using NVM, the Node Version Manager.
For our lab purposes, the distro-stable version will probably be fine since it is 8.x. (Note: This will install an older version of NodeJS. To install the latest version, use the NVM steps below and not these)
1. Install nodejs
sudo apt install nodejs
2. Install NPM (Node Package Manager)
sudo apt install npm
3. Check the version installed.
Install Using NVM (Will install the latest version of NodeJS)
1. Install NVM
curl https://raw.githubusercontent.com/creationix/nvm/master/install.sh | bash
2. Reload system environment using this command. It will set the required environment variables to use nvm on the system.
3. Find Available NodeJS Version
4. Install and use NodeJS
nvm install v12.18.0
5. Check the version installed.
nvm use v12.18.0
4. Check the version installed.
Step 5: Text editors and IDE
1. Because Atom only offers install via Debian package in Ubuntu (.deb) we can’t use apt to do the install. Luckily, we can use snap installer instead. This should already be installed, but if not we can install it:
sudo apt install snapd
2. Using snap, installing Atom is, well, a snap:
sudo snap install atom --classic
- Once the program is finished installing, we can launch it by typing atom from the terminal, or find it under Applications
Visual Studio Code
1. VS code can also been installed from the Snap store:
sudo snap install atom --classic
2. Open VS Code to display the main interface
3. In the upper left, select the Extensions view, search for “python” and install the top hit, i.e. the “Python” extension (by Microsoft)
Step 6: Development tools and clients
1. Postman has a complicated install on some distributions, but we can leverage the snap installer that we used for Atom to install Postman as well.
sudo snap install postman
2. Now you can activate Postman either from the terminal window by using the postman command, or find it under Applications.
1. Once the installation completes, find Postman in the application launcher.
2. Postman will open and allow you to sign-up or sign-in. You do NOT need to sign in to use Postman, you can simply click the “Take me straight to the app. I’ll create an account another time.” link to bypass login.
3. Test that you can make REST API calls with Postman with this fun “Dad Joke” API. Enter https://icanhazdadjoke.com/ into the address bar. Click the “Headers” tab and add an entry for Accept with a value of application/json. Then click “Send” and enjoy your joke 🙂
- ngrok is another app we can get from the handy Snap store:
snap install ngrok
1. Download the .deb Google Chrome installer from google.com/chrome
2. Install it using dkpg:
sudo dpkg -i google-chrome-stable_current_amd64.deb
3. Start Google Chrome from the terminal with the google-chrome-stable command or from Applications
To access the Chrome Developer tools:
1. Open Google Chrome, and click the menu icon (“three dots”) to the right of the address bar
2. Under More tools, click the link for Developer tools
3. You will now see the developer tools open within the window:
- Install the OpenConnect client: