How to specify a ssh key for some git operations on a certain domain Back

Sometimes, the company you are working on will use a GitLab to manage their projects, on which you may have to submit code with ssh keys. So in the local git client, how can we specify a ssh key for some git operations for a certain domain, like git.company.com?

To do so, you may have to create a configuration file named config in the folder ~/.ssh/:

Host git.company.com
    HostName git.company.com
    User git
    IdentityFile ~/.ssh/certain

In this file, it's apparent to see that the private key certain has been specified for git operations around projects on the domain git.company.com.