When using Git for version control, many people use GitHub as a place to hold remote repositories, and push their repositories there. I recently started using BitBucket also, and wanted to be able to simultaneously update my GitHub and BitBucket repositories when changes were made.

To begin, rename your current remote (most likely named origin) to a different name. I'd rename this to the name of the service you are using, such as github or bitbucket.

git remote rename origin github

You can then add the remote for your second remote repository, in this case, a BitBucket repository.

git remote add bitbucket [email protected]:username/example.git

Afterwards, you'll want to set up your origin remote to push to both of these. Issue the following command:

git config -e

You will be greeted with your Git configuration (most likely using vim). Add the [remote "origin"] section to the bottom of the file with the URLs from each remote repository you'd like to push to.

.git/config

[core]
  repositoryformatversion = 0
  filemode = true
  bare = false
  logallrefupdates = true
  ignorecase = true
  precomposeunicode = false
[branch "master"]
  remote = github
  merge = refs/heads/master
[remote "github"]
  url = [email protected]:username/repo.git
  fetch = +refs/heads/*:refs/remotes/github/*
[remote "bitbucket"]
  url = [email protected]:username/repo.git
  fetch = +refs/heads/*:refs/remotes/bitbucket/*
[remote "origin"]
  url = [email protected]:username/repo.git
  url = [email protected]:username/repo.git

You can then push to both repositories by issuing:

git push origin master

Or to a single one by issuing either of these commands:

git push github master
git push bitbucket master