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Tuesday, July 19, 2011

How to set up your private GIT Server


How to set up your own private Git server on Linux

Update 2: as pointed out by Tim Huegdon, several comments on a Hacker News thread pointing here, and the excellent Pro Git book, Gitolite seems to be a better solution for multi-user hosted Git than Gitosis. I particularly like the branch–level permissions aspect, and what that means for business teams. I’ve left the original article intact.
Update: the ever–vigilant Mike West has pointed out that my instructions for permissions and git checkout were slightly askew. These errors have been rectified.
One of the things I’m attempting to achieve this year is simplifying my life somewhat. Given how much of my life revolves around technology, a large part of this will be consolidating the various services I consume (and often pay for). The mention of payment is important, as up until now I’ve been paying the awesome GitHub for their basic plan.
I don’t have many private repositories with them, and all of them are strictly private code (this blog; Amanda’s blog templates and styles; and some other bits) which don’t require collaborators. For this reason, paying money to GitHub (awesome though they may be) seemed wasteful.
So I decided to move all my private repositories to my own server. This is how I did it.

Set up the server

These instructions were performed on a Debian 5 “Lenny” box, so assume them to be the same on Ubuntu. Substitute the package installation commands as required if you’re on an alternative distribution.
First, if you haven’t done so already, add your public key to the server:
ssh mkdir .ssh
scp ~/.ssh/
Now we can SSH into our server and install Git:
sudo apt-get update
sudo apt-get install git-core
…and that’s it.

Adding a user

If you intend to share these repositories with any collaborators, at this point you’ll either:
We’ll be following the latter option. So, add a Git user:
sudo adduser git
Now you’ll need to add your public key to the Git user’s authorized_keys:
sudo mkdir /home/git/.ssh
sudo cp ~/.ssh/authorized_keys /home/git/.ssh/
sudo chown -R git:git /home/git/.ssh
sudo chmod 700 !$
sudo chmod 600 /home/git/.ssh/*
Now you’ll be able to authenticate as the Git user via SSH. Test it out:

Add your repositories

If you were to not share the repositories, and just wanted to access them for yourself (like I did, since I have no collaborators), you’d do the following as yourself. Otherwise, do it as the Git user we added above.
If using the Git user, log in as them:
login git
Now we can create our repositories:
mkdir myrepo.git
cd !$
git --bare init
The last steps creates an empty repository. We’re assuming you already have a local repository that you just want to push to a remote server.
Repeat that last step for each remote Git repository you want.
Log out of the server as the remaining operations will be completed on your local machine.

Configure your development machine

First, we add the remotes to your local machine. If you’ve already defined a remote named origin(for example, if you followed GitHub’s instructions), you’ll want to delete the remote first:
git remote rm origin
Now we can add our new remote:
git remote add origin
git push origin master
And that’s it. You’ll probably also want to make sure you add a default merge and remote:
git config branch.master.remote origin && git config branch.master.merge refs/heads/master
And that’s all. Now you can push/pull from origin as much as you like, and it’ll be stored remotely on your own remote repository.

Bonus points: Make SSH more secure

This has been extensively covered by the excellent Slicehost tutorial, but just to recap:
Edit the SSH config:
sudo vi /etc/ssh/sshd_config
And change the following values:
Port 2207
PermitRootLogin no
AllowUsers myuser git
PasswordAuthentication no
Where 2207 is a port of your choosing. Make sure to add this so your Git remote:
git remote add origin ssh://


Sunday, July 3, 2011

MYSQL Levenshtein Algorithm

Google +1 Button in your site

Implement +1 button to your website

The implementation button is simple. You just need to insert two line of codes to your HTML or theme file.
1. Insert the following javascript code to your  tag
<script type="text/javascript" src="">script>
2. Insert the following tag to the place where you want the button to appear.
That ‘s it.
For WordPress
As of this post, there are no plugins for adding the +1 button yet (but I am sure it will be available very soon). To add the +1 button, in your themes folder, open the header.php file. Insert the javascript code to the  tag
Open your single.php or index.php, and place the  to the place where you want it to appear.


There are several parameters that you can use.
Size of the button: The default is “standard“, which is 24px tall. You can choose “small” (15px), “medium” (20px) or “tall” (60px).
Include count: The default is set to “true”. You can turn it off if you don’t want the +1′d count to appear.
URL (href): By default, the button will grab the URL of the existing page, but you can specify your own URL with the parameter href="your-url-here".

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