Setting a custom path for git private SSH key on linux

Question

You can achieve that using a ssh config file.

First create a file inside your ~/.ssh folder named config, you can use some command like the following

$ nano ~/.ssh/config

Then, the content of the file should have the location of your key based on each host name. for example:

Host github.com
 IdentityFile ~/myPublicKeyFolder/myGitHubFile
Host heroku.com
 IdentityFile ~/myPublicKeyFolder/myHerokuFile

So, when git tries to access each host it will follow the rules inside this config file based on the git host your trying to reach