Various documents such as
http://confluence.atlassian.com/display/BITBUCKET/Set+up+SSH+for+Git
and
http://help.github.com/ssh-key-passphrases/
Refer to restarting git bash. How to do it from Linux?
This refers to the Git Bash shell, which is installed through Cygwin on Windows systems. If you need to do this on Linux, just close and close the terminal window again. Often you can replace this step source ~/.bashrc
source ~/.bashrc