#try to clone(I have added my pub key to git hub , and I used to success at home, let me figure out what the problem is)
cor@debian:~/geekbang$ git clone git@github.com:CornerCornerLi/Python000-class01.git Cloning into 'Python000-class01'... Warning: Permanently added the RSA host key for IP address '140.82.114.3' to the list of known hosts. sign_and_send_pubkey: signing failed: agent refused operation Permission denied (publickey). fatal: Could not read from remote repository. Please make sure you have the correct access rights and the repository exists.
#2. is this caused by my git configuration? references from github, let me new generate a ssh key for a try.
Oh yeath, it seems because, I missed below two steps, successfully finally.
Start the ssh-agent in the background. $ eval "$(ssh-agent -s)" > Agent pid 59566 Add your SSH private key to the ssh-agent. If you created your key with a different name, or if you are adding an existing key that has a different name, replace id_rsa in the command with the name of your private key file. $ ssh-add ~/.ssh/id_rsa