Time for action – checking out using CLI mode

Let's learn two more commands to add to your Git lingo.
```
Git log
Git checkout ___commit_id___
```
Git log is for showing the history of a repository; it gives us information such as commit ID, author, date, and the commit comment given by us.
We need the commit ID for use later.
Don't worry about memorizing a sequence of 40 characters. Our magic wand, Git, does the hard work of filling in the remaining characters for you to identify a commit if you supply it with the first five characters.
Let's see it in action.
Now you have travelled back to a previous commit, and your files will contain the contents of the previous commit. You can view the contents of the file now.
Note
When you have checked back to a previous commit you are hanging in the air; any changes to your files now will be lost once you go back to the master. We'll see how to handle this in later chapters with a concept called branching.
To return to the latest changes run git checkout master; this will bring you to the latest changes.
If you see a message similar to the one in the previous screenshot, you have returned to your latest changes. Again, you can view the contents of the file.

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