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This is the guide for setting up git in Windows. There are also guides for OS X and Linux.


First: Download and Install Git

At the heart of GitHub is an open source version control system (VCS) called Git*. Created by the same dudes that created Linux, Git is responsible for everything GitHub related that happens locally on your computer.
  1. Download and install the latest version of Git for Windows.
    Use the default options for each step.
    Welcome pageInformationSelect destination locationSelect start menu folderSelect componentsAdjusting your PATH environmentConfiguring the line ending conversionsInstallingInstallation complete
    Do not use PuTTY if you are given the option. GitHub only provides support for openssh.

Next: Set Up SSH Keys

We use SSH keys to establish a secure connection between your computer and GitHub. Setting them up is fairly easy, but does involve a number of steps.
To make sure you generate a brand new key, you need to check if one already exists. First, you need to open Git Bash (not the Windows command line), found in the Start Menu in the “git” folder.
Open the terminal

  1. Check for SSH keys. Have an existing key pair? You can skip to Step 4.
    First, we need to check for existing ssh keys on your computer:
    $ cd ~/.sshChecks to see if there is a directory named ".ssh" in your user directory
    If it says “No such file or directory“ skip to step 3. Otherwise continue to step 2.
  2. Backup and remove existing SSH keys.
    Since there is already an SSH directory you’ll want to back the old one up and remove it:
    $ lsLists all the subdirectories in the current directoryconfig id_rsa id_rsa.pub known_hosts$ mkdir key_backupmakes a subdirectory called "key_backup" in the current directory$ cp id_rsa* key_backupCopies the id_rsa and id_rsa.pub files into key_backup$ rm id_rsa*Deletes the id_rsa and id_rsa.pub files
  3. Generate a new SSH key.
    To generate a new SSH key, enter the code below. We want the default settings so when asked to enter a file in which to save the key, just press enter.
    $ ssh-keygen -t rsa -C "your_email@youremail.com"Creates a new ssh key using the provided emailGenerating public/private rsa key pair.Enter file in which to save the key (/Users/your_user_directory/.ssh/id_rsa):<press enter>
    Now you need to enter a passphrase.
    Enter passphrase (empty for no passphrase):<enter a passphrase>Enter same passphrase again:<enter passphrase again>
    Which should give you something like this:
    Your identification has been saved in /Users/your_user_directory/.ssh/id_rsa.Your public key has been saved in /Users/your_user_directory/.ssh/id_rsa.pub.The key fingerprint is:01:0f:f4:3b:ca:85:d6:17:a1:7d:f0:68:9d:f0:a2:db user_name@username.comThe key's randomart image is:+--[ RSA 2048]----+|     .+   +      ||       = o O .   ||        = * *    ||       o = +     ||      o S .      ||     o o =       ||      o . E      ||                 ||                 |+-----------------+
  4. Add your SSH key to GitHub.
    On the GitHub site Click “Account Settings” > Click “SSH Keys” > Click “Add SSH key”

    Open the id_rsa.pub file with a text editor (Notepad, TextEdit, or gedit will do just fine). This is your public SSH key. You may need to turn on “view hidden files” to find it because the .sshdirectory is hidden. It’s important you copy your SSH key exactly as it is written without adding any newlines or whitespace. Now paste it into the “Key” field.
    Now paste it into the “Key” field.
    Paste your SSH Key
    Hit “Add Key.”
  5. Test everything out.
    To make sure everything is working you’ll now SSH to GitHub. Don’t change the “git@vishalvyas.com” part. That’s supposed to be there.
    $ ssh -T git@vishalvyas.comAttempts to ssh to github
    Which should give you this:
    The authenticity of host 'vishalvyas.com (' can't be established.RSA key fingerprint is 16:27:ac:a5:76:28:2d:36:63:1b:56:4d:eb:df:a6:48.Are you sure you want to continue connecting (yes/no)?
    Don’t worry, this is supposed to happen. Type “yes”.
    Hi username! You've successfully authenticated, but GitHub does not provide shell access.

Then: Set Up Your Info

Now that you have Git set up and your SSH keys entered into GitHub, it’s time to configure your personal info.
  1. Set your username and email.
    Git tracks who makes each commit by checking the user’s name and email. In addition, we use this info to associate your commits with your GitHub account. To set these, enter the code below, replacing the name and email with your own. The name should be your actual name, not your GitHub username.
    $ git config --global user.name "Firstname Lastname"Sets the name of the user for all git instances on the system$ git config --global user.email "your_email@youremail.com"Sets the email of the user for all git instances on the system
  2. Set your GitHub token.
    Some tools connect to GitHub without SSH. To use these tools properly you need to find and configure your API Token.
    On the GitHub site Click “Account Settings”
    Copy your API token
    At the command line run the following code, using your GitHub username and token in place of the ones shown.
    $ git config --global github.user usernameSets the GitHub username for all git instances on the system$ git config --global github.token 0123456789yourf0123456789tokenSets the GitHub token for all git instances on the system
    *Note* If you ever change your GitHub password, a new token will be created and will need to be updated.

    Vishal Vyas


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  2. Awsme post ..... i would also like if you post setup guide for bzr and svn .
    thanks fellow.