Git

git init
git add README.md
git commit -m "first commit"
git remote add origin [git_url]
git push -u origin master

git remote -v
git remote set-url origin [git_url]

git log --format=%h -1

# blame at line 40 of file foo
git blame -L 40,+1 foo

# blame at line 40 - 60 of file foo
git blame -L 40,+21 foo
git blame -L 40,60 foo

git tag -a v2.1.0 -m "xyz feature is released in this tag." # Annotated Tags
git tag v2.1.0 # Lightweight Tags

git push origin --tags # Push tags

git push --delete origin TAGNAME # Delete the tag from the remote repository
git tag -d TAGNAME # Delete the tag locally

# Delete all local tags and get the list of remote tags
git tag -l | xargs git tag -d
git fetch

# Remove all remote tags
git tag -l | xargs -n 1 git push --delete origin

# Clean up local tags
git tag -l | xargs git tag -d

git clone -b <branch> <remote_repo>
git clone -b my-branch git@github.com:user/myproject.git 

# to prevent fetching of all branches at Git 1.7.10
git clone -b opencv-2.4 --single-branch https://github.com/Itseez/opencv.git

cd repo2
git checkout master
git remote add r1remote **url-of-repo1**
git fetch r1remote
git merge r1remote/master --allow-unrelated-histories
git remote rm r1remote

# convert git: to http:
git config --global url.https://github.com/.insteadOf git://github.com/

# convert http: to git:
git config --global url.git@source.golabs.io.insteadOf https://source.golabs.io

# Configuring a remote for a fork
git remote add upstream https://github.com/ORIGINAL_OWNER/ORIGINAL_REPOSITORY.git

# View remote
git remote -v

# sync
git fetch upstream
git merge upstream/master

alias stree='/Applications/SourceTree.app/Contents/Resources/stree'