Issue
By default the ssh config file is ~/.ssh/config, but for some historical reason, there already have a directory ~/.ssh/config/, so I want to change the ssh config file name or location, so my ssh can pick the new config file up.
I already tried ssh -F /path/to/configfile, but this will require me to run ssh command each time, I am expecting a persistent configuration, so that it can be affected by other ssh related commands as well, such as git.
Solution
Copying this answer found on SuperUser :
Environment variable GIT_SSH_COMMAND:
From Git version 2.3.0, you can use the environment variable GIT_SSH_COMMAND like this:
GIT_SSH_COMMAND="ssh -i ~/.ssh/id_rsa_example" git clone example
Note that -i can sometimes be overridden by your config file, in which case, you should give SSH an empty config file, like this:
GIT_SSH_COMMAND="ssh -i ~/.ssh/id_rsa_example -F /dev/null" git clone example
Configuration core.sshCommand:
From Git version 2.10.0, you can configure this per repo or globally, so you don't have to set the environment variable any more!
git config core.sshCommand "ssh -i ~/.ssh/id_rsa_example -F /dev/null"
git pull
git push
Answered By - LeGEC