Create a new folder / project by either creating the project structure yourself or using a build tool to create it for you. Here are some of the example build tools you could use:
Change into the new folder created for your project. Then create a new git repository using the git initialise command:
cd my-project git init
You have just created an empty local git repository. In effect, you have created the .git folder within your project that will contain all the change history and changes themselves as the project develops. You dont need to understand what goes on in the .git folder, but you do need to remember that if you delete it then all your change history is deleted.
To see what changes you could commit to git, use the git status command:
If you have files in your project they will show up as untracked files when you do a git status. This means that these files have yet to be put under git version control. You will soon see that git status is used all the time to let you know what the current situation is with your changes.
To tell git what changes you want to version, you tell git which files you want to add to make up part of the next commit using the git add command. You can specify a particular file or you can add all files at once.
To add a specific file
git add filename.ext
To add all files that have been altered or added to the working copy since the last commit:
git add .
Adding files to git is not the same as doing a commit. With git add you are preparing one or more files to be committed. When you add a file, it is placed in what is called the staging area (or index). Staging files is a useful way to group changes over multiple files in order to make a meaningful commit. In Chapter 7 - the local git workflow, we will cover the staging area and other steps in Git.
To see what files are staged at any time, you use the git status command.
When you have told git about all the changes you want to add, you use the
git commit command.
For each commit, you should provide a meaningful message that explains what you have commited. When you run the commit command, your default editor will open for you to type in the commit message. Alternativley you can specify the message with the
git commit -m "meaningful message describing the commit"
For additional changes you continue the cycle of adding files (staging them) and then committing those changes. This gives you a very detailed history of changes, so you can see how the project has evolved, step back in time and more easily merge changes from different developers.
# edit files git add filename git commit -m "describe the change"
You can see all the changes that have been committed to your local repository using the
git log command.
git log shows a very verbose commit history. Using options with the git log command you can make the output easier to read.
git log --oneline --graph --decorate
--onelineshows the commit details on a single line
--graphshows where branches and merges have been made in the history
--decorateshows which commit version
[TODO: image of git log]
This work is licensed under a Creative Commons Attribution 4.0 ShareAlike License, including custom images & stylesheets. Permissions beyond the scope of this license may be available at @jr0cket