Let's talk a little about git. Git is a very useful tool for saving code change history, and other things.
git init
git init initializes a git repository. What this means is that the program git creates a hidden directory and starts to track changes in the directory you are in.
git commit will commit (or save) the history of change for the files that were staged.
git log
git log shows the commit history.
git show <commit hash>
git show will show the actual changes for a given commit.
git remote add <remote name> <remote address>
git remote add is used to add an address and name for a remote repository. For example git remote add origin https://github.com/compsciacademy/Git_Fun.git. This will add a remote named origin at the address https://github.com/compsciacademy/Git_Fun.git
You can view your git remotes with the -v or --verbose option, i.e. git remote -v.
git push <remote name> <branch name>
git push is used to push the local commits to the remote. For example, if I want to push the changes on my master branch to the origin remote, I can use git push origin master.
git commit --amend will open up your default editor, which is maybe VI or VIM (hint: :w to write/save changes, :q to quit).
If you amend a commit that you have already pushed, you will need to force push, e.g. git push -f origin master.