Tag Archives: commit

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Exploring the Git command line – A getting started guide

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What is Git?

Git is distributed version control software.

Version Control is the ability to save and track changes over time, without interfering with previous versions. As the software is distributed, it means all users can have a copy of an entire repository, containing all commits, branches, and files.

There are a few things you should know before we dive in:

  • Branches are lightweight and cheap, so it’s OK to have many of them
  • Git stores changes in SHA hashes, which work by compressing text files. That makes Git a very good version control system (VCS) for software programming, but not so good for binary files like images or videos.
  • Git repositories can be connected, so you can work on one locally on your own machine and connect it to a shared repository. This way, you can push and pull changes to a repository and easily collaborate with others.
Why Use Git?

Version Control is important in development, whether for software, or simply for developing your automation scripts. Without it, you can risk losing your work. By using Git, you can make a “commit”, which is a snapshot of your point in time work. This provides you the capability to rollback to previous commits if needed.

Install the command line tool
# Executable Installers (all OSes)
https://git-scm.com/downloads 

# Command Line Installer 
# Mac OS X
brew install git
# Linux
sudo apt-get install git-all

# Validate installation
git version
Authenticating to GitHub and creating a repository

To make life easier, I am going to use GitHub as my main source control platform.

I am going to start off creating a repository on the GitHub website. This is simple to complete, so I will not document the steps, but you can view this page for more information.

I would also recommend at this point setting up the authentication with GitHub as well to your local CLI.

Cloning a Repository locally

Once our repository is created, we start off by cloning the repository locally.

git clone {url}

#Example
git clone https://github.com/saintdle/veducate-git-example.git

git clone

Create and commit our first file

Continue reading Exploring the Git command line – A getting started guide →

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Getting the GitHub Verified commit badge when using Visual Code on Mac OS X

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The Issue

Recently I’ve started to use Visual Code as my editor on Mac OS X, and using it with my GitHub Repos. It’s pretty cool! However I noticed that when I submit a commit via code, I do not see the verified badge.

github commit view - verified

The Cause

When I look at my global git config on my Mac OS X machine, I can see that I’ve configured the settings so that my user details are passed to GitHub as an author of the repository.

git config --global --list

git config --global --list

The Fix

We need to setup a GPG public key to be used by git on our machine when interacting with GitHub. Continue reading Getting the GitHub Verified commit badge when using Visual Code on Mac OS X →

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Using Docker to update and commit to a container image

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I was helping a customer build some customized automation tasks using vRealize Automation Codestream. These tasks required the use of a container image with certain tools installed, usually we can include a CI task to download the tools into the container image on the fly. However, my customer’s environment is offline, so I needed to provide them a container image with everything installed by default.

Before we dive into the process of running a container and committing the changes, it is recommended where possible to create a new docker file that would build your docker image as needed with the associated commands such as the below:

FROM node:12-alpine
RUN apk add --no-cache python g++ make
WORKDIR /app
COPY . .
RUN yarn install --production
CMD ["node", "src/index.js"]

Committing changes to a container image in this way can cause the image to become bloated. But sometimes there’s a need to do just do it this way.

Prerequisites
Pull the image you want to update
docker pull {image location/name}

docker pull image

Check your images and get the ID
docker images

For the next command, we will need the Image ID.docker images

Run your image as an active container
docker run -it {Image_ID} /bin/bash

This will then drop you into the tty of the running container.

docker run -it image_id bash

Modify your container

Continue reading Using Docker to update and commit to a container image →