Some useful git tips for everyday use.

Set your git details
git config --global user.name "Stevie Wonder"
git config --global user.email "stevie@example.com"
Initialize a git repo
git init
Clone a remote repo
git clone <url>
Update your current branch with remote
git pull origin master
Change origin URL
git remote set-url origin <url>
Add remote URL
git remote add <remote-name> <url>
View remote URLs
git remote -v
Create a branch locally
git checkout -b <branch-name>
Delete a branch locally
git branch -d <branch-name>
Show current branch
git branch
Switch to different branch
git checkout <branch-name>
Create a branch remotely
git push -u origin <branch-name>
Delete a branch remotely
git push origin :<branch-name>
Create a git alias
git config --global alias.st status
git config --global alias.ci commit -m
git config --global alias.cob checkout -b
Show unstaged changes you made since last commit
git diff
Stash local changes
git stash
Remove a single stashed state from the stash list and apply on top of the current working tree state
git stash pop
List all stashes
git stash list
Remove all stashed states
git stash clear
Add all files, including subdirectories
git add .
Undo all local changes
git reset --hard
Add individual files
git add <file1> <file2>...
Remove individual files
git rm <file1> <file2>...
Commit changes to all tracked files
git commit -m "<message>"
Re-commit previous commit with different message
git commit --amend -m "<message>"
Undo last local commit
git reset --soft HEAD^
git reset HEAD .
Rebase to local master
git rebase master
Push local branch
git push origin <branch-name>
Squash multiple commits
git rebase -i master
Comapre commits on 2 different branches
git diff <branch-name1> <branch-name2>
Revert one commit and push it
git revert <HASH>
git push origin master
Show recent commits
git log
Show recent commits with full diffs
git log -p
Show commit history in one line
git log --pretty=oneline
Delete all local branches but master
git branch | 
grep -v "master" | 
xargs git branch -D
Show all branches merged into master
git branch --merged master
Show all branches merged to HEAD(tip of current branch)
git branch --merged
Show all branches that have not been merged to master
git branch --no-merged
Delete all merged branches into master
git branch -r --merged |
grep origin |
grep -v '>' |
grep -v master |
xargs -L1 |
awk '{split($0,a,"/"); print a[2]}' |
xargs git push origin --delete

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Checkout this book:
• Pro Git (2nd Edition)