How to deal wiht multiple Git accounts on the same machine

Multiple Git accounts

### deal with multiple Git accounts on one machine

1. generate ssh key for each account 
    $ ssh-keygen -t rsa -C "your_email@example.com"
2. add the keys to github
3. edit the ~/.ssh/config file 

Host userNameA
        Hostname github.com
        User git
        IdentityFile path-to-ssh-key-for-userNameA

Host userNameB
        Hostname github.com
        User git
        IdentityFile path-to-ssh-key-for-userNameB

(might need to chmod 600 the config file)

4. do git clone 
    $ git clone userName:organisationName/repo.git