Status of files in git

1. Untracked: any files in the working directory(a checkout or a working copy) that are not in last snapshot and are not in the staging area.
2. Unmodified: files in the last snapshot
3. Modified: files in the working directory and modified
4. Staged(cached, indexed): files in the staging area

State machine

• untracked add the file–> staged
• unmodified edit the file –> modified
• unmodified remove the file –> untracked
• modified stage the file –> staged
• staged commit the file –> unmodified