# Genrate keys

$ ssh-keygen -t rsa -b 4096 -C "your_email@example.com"

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# Edit ~/.ssh/config

Host your.hostname.com
    Hostname github.com
    User git
    IdentityFile ~/.ssh/id_rsa

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# Add Identity without Keychain
# There may be times in which you don't want the passphrase stored in the keychain,
# but don't want to have to enter the passphrase over and over again.

$ ssh-add ~/.ssh/id_rsa