What is Version Control?

Management of changes to documents

What is Version Control?

Management of changes to documents

What is Version Control?

Management of changes to documents

Built-in at

• SageMathCloud
• Dropbox
• Word revision control
• Google drive
• ...

What SMC's VC does for you

Advantages

• guarantees that every previous version of your work is saved
• you can always revert back to a previous version
• it's automatic - you don't have to set it up

What SMC's VC does not

Missing in SageMathCloud

• No annotation of previous versions
• Very time-consuming to find the earlier version you are looking for
• Does not understand connection between files
• Can not display version differences
• Only works for SMC files stored on SMC
• Not suitable for large scale collaboration

Version control with Git

Git is a very popular version control system

• You control when a new version is saved
• Each version is annotated to indicate the changes
• Easily display differences between any two versions
• Easily revert any or all files to previous version
• Very powerful for advanced users...
• ...in particular when working with a team...
• ...in particular on GitHub

"If your open source software is not on GitHub, it doesn't exist"

Version control with Git

Glossary

• Git: Very control software, can be accessed in different ways
• Repository: Where git stores all version history information
• Commit: Saves the current state of the files as new version number
•  
• GitHub: Popular host for git repositories with many contributors
• Remote: Location of your repository online
• Pull & Push: Receiving and sending changes to the remote