How to setup multiple ssh keys for multiple github accounts (Mac OS)

Setup-multiple-ssh

First check if you have the .ssh directory in the home repository. If not, do not worry when you create your key it will create automatically

You can list your keys in your pc with

```
ls -l ./.ssh
```
First you have to generate SSH Keys with the following command

```
ssh-keygen -t rsa -b 2048
```
Then you will receive this notification


```
Generating public/private rsa key pair.
Enter file in which to save the key (/Users/your_user/.ssh/id_rsa): 
Enter passphrase (empty for no passphrase): 
Enter same passphrase again:
```

In the path to save the key you have to write the following

```
/Users/your_user/.ssh/id_rsa_{{preferredName}}
```

eg:
```
/Users/your_user/.ssh/id_rsa_personal
/Users/your_user/.ssh/id_rsa_firm
```


This key is generate for Github, then you have to repeat the same steps for Gitlab

If you check the .ssh directory you will see

The pub file is the public key that you have to enter in the Github and Gitlab repository. So the next step is to copy the pub key in the repositories

Github
Go to Setting, then to SSH and GPG keys, then New SSH Key

Enter a title to the keys and then Add SSH Key

In this part Github will ask for your password, after that you have just add your public key to Github

Register your keys
Next you need to register the SSH keys locally

```
ssh-add ./.ssh/id_rsa_{{preferredName}}
```

After that you need to create a config file. Complete the file with the following code

Open the ~/.ssh/config file in any text editor and put the instructions below

```
Host personal
  HostName github.com
  IdentityFile ~/.ssh/id_rsa_personal 

Host firm
  HostName github.com
  IdentityFile ~/.ssh/id_rsa_firm
  
  ```
We’ve created 2 configs for github.com with aliases personal and firm.
```
git clone [email protected]:oluwatobilobaoke/my_project.git -> git clone git@personal:oluwatobilobaoke/my_project.git

git clone [email protected]:firmgit/savings_project.git -> git clone git@firm:firmgit/savings_project.git
```

If you already cloned your project, just set the URL with the respective alias as the origin:
git remote add origin git@personal:tobioke/my_project.git — this would add to list of URLs
git remote set-url origin git@personal:tobioke/my_project.git — this would set as origin URL