why do people use bitbucket over github code example

Example 1: how to fork from github to bitbucket

$ git clone https://github.com/cakephp/cakephp
$ cd cakephp
$ git push [email protected]:mg/cakephp.git master

Example 2: repo from bitbucket to github

cd $HOME/Code/repo-directory
# Rename Origin to bitbucket
git remote rename origin bitbucket
# Add the origin of your new github repository
git remote add origin https://github.com/<username>/<repo-name>.git
# Push ypur branch master to your github repo
git push origin master
# Remove the old origin
git remote rm bitbucket