Configuration for multiple SSH keys

This trick can be used to ease the process when using SSH for authentication. It can either be used to access a webserver or manage a git repository by terminal.

2. Create different public keys

Generally, SSH keys are kept in this folder, you can check your current ones:

 $ ls ~/.ssh/ 

Since I'll be creating multiple keys, I am organizing them in separated folders

 $ cd ~/.ssh/ 
 $ mkdir work
 $ mkdir personal

For each of them I'll be running:

 $ ssh-keygen -t rsa -C "Your comment"

Before heading to the next steps, make sure you have a pair of keys inside each folder

2. The config file:

Create a config file inside /.ssh/ folder

$ touch config

Set it as so:

Host mine
   HostName github.com
   User git
   IdentityFile ~/.ssh/personal/id_rsa

Host theirs
    HostName github.com
    User git
    IdentityFile ~/.ssh/work/id_rsa

Now, mine is an alias for my first settings. I could set other things beyond HostName, User and IdentityFile. Like port.
We use the alias as a reference:

git clone mine:zerkeizi/multiple-ssh-configuration.git

Thats it.