生成ssh key 以bying用戶執行下面的命令，一路回車即可
ssh-keygen 實例： $ ssh-keygen Generating public/private rsa key pair. Enter file in which to save the key (/c/Users/zhjinl/.ssh/id_rsa): /c/Users/zhjinl/.ssh/id_rsa already exists. Overwrite (y/n)? y Enter passphrase (empty for no passphrase): Enter same passphrase again: Your identification has been saved in /c/Users/zhjinl/.ssh/id_rsa. Your public key has been saved in /c/Users/zhjinl/.ssh/id_rsa.pub. The key fingerprint is: SHA256:pGcPuxR4AZq4NBKXspbqrW4V225qp0J1l0Z06PntmPk The key's randomart image is: +---[RSA 2048]----+ |. .. o... | |.o.. o +. | |.o= o o = | |.= = . X . | |o o.= = S . | |.. o . + * . | |o o . . * | | + o + . = . | |oo+o= . .. | +----[SHA256]-----+
然後將生成在~/.ssh/id_pub裏的內容配置到自己的阿里code公鑰列表中（用於代碼檢出、提交）；
touch ~/.ssh/authorized_keys // 將宿主機的公鑰加到此文件中 chmod 400 ~/.ssh/authorized_keys