Lab6

# Git-1 
***Note:*** This document is my lecture note about Git-1.

## Version Control and Collaboration
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Basic solution: Making copies
if you make copies, you can use previous files.
-> Git is Version Control
#### Changes vs Snapshots
If file A changed
1. Change: Use ΔA
2. Snapshot: Use A1



#### Local, Centralized, Distributed
1. Local: individual computer
2. Centralized: Cooperation -> Many Version Control use it.
3. Distributed: Cooperation -> if you lost files or files broke, you can get files.
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#### Three Staes in Git
1. Modified:
2. Staged:
3. Comitted: comit == snapshot
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#### Git config: First-time setup
1. System level: --system opthion
2. Global (user) level: --global option
3. Local level: --local opthion
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1. $ git init : Initializing a Repository in an Existing Directory
2. $ git status : Checking Repository Status
3. $ git add [file_name] : Adding a new file to be staged(tracked)
4. $ git add. : Adding all files to be staged(tracked)
5. $ git rm --cached [file_name] : Unstaging a file
6. $ .gitignore : ignoring a file