The document outlines various Git commands for configuring user information, managing remote repositories and branches, cleaning and resetting branches, merging and diffing changes, deleting branches, adding submodules, configuring remote tracking, generating and applying patches, and enabling color output. Some key commands are git config for setting user name and email, git pull --rebase for rebasing local changes, git reset and git clean for resetting the working directory state, and git merge and git diff for integrating changes and comparing revisions.

1. GIT
Basic commands

2. Change username, e-mail
Globally
git config --global user.name
git config --global user.email
For a repo
git config user.name
git config user.email

3. Change remote origin
Check all branches and its tracking
git show remote origin
Change branch tracking
git branch branch_name -u <your_new_remote/branch_name>

4. Clone and pull
Rebase rolling commits above
git pull --rebase
Refresh
git fetch -p

5. Clean and reset branches
Delete untracked files and folders
git clean -fd
Make a local branch identical to a remote
one
git reset --hard origin/<branch_name>

6. Diff and merge
Diff
git diff <commit_id>
git difftool <commit_id>
Merge
git merge <branch_name>
git mergetool <branch_name>

7. Delete branches
To remove a local branch from your machine:
git branch -d the_local_branch
git branch -D the_local_branch
To remove a remote branch from the server:
git push origin :the_remote_branch
git push origin --delete the_remote_branch

8. Adding external repositories
git submodule add <repo.git> <local folder>
git submodule init
git submodule update

9. Configure remote branch tracking
git branch -u upstream/foo

10. Patches
Generate a patch from the last commit
git format-patch -1 HEAD
Apply a patch
patch -p1 < file.patch

11. Colours
git config --global color.ui auto