102-03.md

layout	page
title	102.03 Reading Notes
permalink	/102-03/

102-03:

Version Control Systems (VCS):

• Log a history of changes to files for comparison/correction
• Local Version Control: Database of changes locally saved (on hard drive)
• Centralized Version Control (CVCS): Single server-side database accessible by multiple clients
• Distributed Version Control (DVCS): Use muitiple repositories to limit reliance on single database source (Git is one of these)

DVCS Features of Git

• Use of snapshot comparison to determine if local files may be used
• File validity check on each change (limits corruption & loss)
• Cloning of existing repository

Git file states:

• Committed: In local database
• Modified: Changes not committed
• Staged: Will be committed w/ next snapshot

Useful Git commands

• $ git status : outputs file state
• $ git add filename or git add * track & stage files for commitment ( * adds all repo files)
• $ git commit -m "example commit comment" : Commits staged files w/ message
• $ git push origin master : Pushes to remote repo "origin" (git default) from local repo "master" (default)
• git stash : temporarily sidelines changes, to be applied with git stash apply
• git remote : outputs remote handle names (use git remote -v to output URLs as well)