How to add multiple ssh keys for the same host

Create ssh directory

mkdir ~/.ssh
mkdir ~/.ssh/github
mkdir ~/.ssh/devops

Create ssh key

ssh key for Github

ssh-keygen -t rsa -b 4096 -f ~/.ssh/github/${accountName}/id_rsa -C "[e-mail]"

ssh key for Azure DevOps

ssh-keygen -t rsa -b 4096 -f ~/.ssh/devops/${organizationName}/id_rsa -C "[e-mail]"

Create .ssh/config

vi ~/.ssh/config

Host github-${accountName}
HostName github.com
  User git
  AddKeysToAgent yes
  IdentitiesOnly yes
  UseKeychain yes
  IdentityFile ~/.ssh/github/${accountName}/id_rsa

Host devops-${organizationName}
HostName ssh.dev.azure.com
  User git
  AddKeysToAgent yes
  IdentitiesOnly yes
  UseKeychain yes
  IdentityFile ~/.ssh/devops/${organizationName}/id_rsa

Copy and paste public key to Github

pbcopy < ~/.ssh/github/${accountName}/id_rsa.pub

Copy and paste public key to AzureDevOps

pbcopy < ~/.ssh/devops/${organizationName}/id_rsa.pub

Clone repository

Github

git clone git@github-${accountName}:${accountName}/${projectName}.git

DevOps

git clone git@devops-${organizationName}:v3/${organizationName}/${projectName}