linux scp ssh命令不用输入密码

把你的本地主机用户的ssh公匙文件复制到远程主机用户的~/.ssh/authorized_keys文件中 假设本地主机linux100,远程主机linux200 一，在linux100主机里的用户 运行 #ssh-keygen -t rsa 结果如下 QUOTE: Generating public/private rsa key pair. Enter file in which to save the key (/home/.username/ssh/id_rsa):#回车 Enter passphrase (empty for no passphrase):#回车 Enter same passphrase again:#回车 Your identification has been saved in /home/.username /.ssh/id_rsa. Your public key has been saved in /home/.username /.ssh/id_rsa.pub. The key fingerprint is: 38:25:c1:4d:5d:d3:89:bb:46:67:bf:52:af:c3:17:0c username@localhost Generating RSA keys: Key generation complete. 会在用户目录~/.ssh/产生两个文件，id_rsa，id_rsa.pub 二，把linux100主机上的id_rsa.pub文件拷贝到linux200主机的root用户主目录下的.ssh目录下,并且改名为authorized_keys 即： /root/.ssh/authorized_keys 这样在linux100主机上使用scp命令复制文件到linux200上将不提示输入密码了，直接复制了。 反之亦然！     从实验的过程中发现： 双方只能在root权限下使用   如果配置完成之后，发现还是不好使，需要检查/etc/ssh目录下的sshd_config文件下的 RSAAuthentication yes PubkeyAuthentication yes AuthorizedKeysFile      .ssh/authorized_keys   3行是否打开，如果为注释掉的，则需要打开。