mac:ssh登陆总是需要输入钥匙串密码解决

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　　方法1:
　　物理重置法:
　　finder —> 左上角:前往—>按住option建—>多出一个资源—>KeyChains—>第一个文件夹(删除掉次文件夹)
　　然后重启即可

　　方法2(此种方法更有效):
　　将~/.ssh/id_rsa添加至钥匙串的管理
　　ssh-add -K id_rsa
　　或者
　　ssh-add -K ~/.ssh/id_rsa



     ssh-add adds private key identities to the authentication agent, ssh-agent(1).  When run without arguments, it adds the files
~/.ssh/id_rsa, ~/.ssh/id_dsa, ~/.ssh/id_ecdsa, ~/.ssh/id_ed25519 and ~/.ssh/identity.  After loading a private key, ssh-add will try to
load corresponding certificate information from the filename obtained by appending -cert.pub to the name of the private key file.  Alterna-
tive file names can be given on the command line.
If any file requires a passphrase, ssh-add asks for the passphrase from the user.  The passphrase is read from the user's tty.  ssh-add
retries the last passphrase if multiple identity files are given.
The authentication agent must be running and the SSH_AUTH_SOCK environment variable must contain the name of its socket for ssh-add to
work.
-K      When adding identities, each passphrase will also be stored in the user's keychain.  When removing identities with -d, each
passphrase will be removed from it.