Sometimes you want to keep a git repository private, at least temporary, without owning a server or a paid GitHub account. If you have a free Dropbox account you can host your private repo there.
Open a Terminal window if you are on Linux or Mac, on Windows just start a Bash window from your Git installation. Your Dropbox folder is created by default on HOME for Linux and Mac, or on MyDocuments in Windows.
Navigate to your Dropbox folder:
1 2 | cd ~
cd Dropbox
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Once you are in ~/Dropbox you will want to create a bare git repo:
1 2 3 | mkdir repo01
cd repo01
git --bare init
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Now, you can use this folder as a private repository. Let’s try some tests:
1 2 3 4 5 6 | cd ~
mkdir local_repo01
cd local_repo01
git init
touch t1.txt t2.txt p.cpp
echo "add some text" > t1.txt
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Commit changes:
1 2 | git add t1.txt t2.txt p.cpp
git commit -m 'test'
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Add the “remote” repo (the one from Dropbox) as origin:
1 | git remote add origin ~/Dropbox/repo01
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Now, we can push the above files from the master branch to the remote origin:
1 | git push origin master
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If you want to simulate the workflow on a different machine clone repo01 change some files and save the changes:
1 2 3 4 5 6 | cd ~
git clone ~/Dropbox/repo01 test_clone
cd test_clone
ls > t2.txt
git commit t2.txt -m 'some changes'
git push origin master
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You can go back to your original working folder and see the changes from the last step:
1 2 3 | cd ~
cd local_repo01
git pull origin master
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If you want to learn more about using Git I would recommend Pro Git 
