环境:ubuntu10.10(client) + Centos 5.5 (server)
每次ssh连接服务器 ，scp 拷贝东西 ， 或者rsync同步 ，都要输入密码验证，很麻烦，把publickey传到server上的 authorized_keys 中即可 ，建立信任后就不需要输入密码了
1,生成publickey
>ssh-keygen -t rsa # 或者用 dsa 加密2,上传 publickey 文件到server
>scp ~/.ssh/id_dsa.pub root@173.230.155.150:~/.ssh/authorized_keys # 173.230.155.150 换成你server的ip
3,ok了
======
本地普通用户免密码连接服务器上的普通用户
把服务器上的 authorized_keys 变为 600权限,.ssh 目录和用户主目录变为 700 / 755 权限
[entsea@www .ssh]$ ll total 16 -rw-------. 1 entsea entsea 404 May 19 02:50 authorized_keys
=========
ssh时候直接写host连接,不写username配置
localhost:.ssh wangxianfeng$ cat ~/.ssh/config Host www.wxianfeng.com user wxianfeng >ssh www.wxianfeng.com
http://liluo.org/2011/05/%E8%AE%BE%E7%BD%AE-ssh-%E8%87%AA%E5%8A%A8%E7%99%BB%E9%99%86%EF%BC%88%E5%85%8D%E5%AF%86%E7%A0%81%EF%BC%8C%E7%94%A8%E6%88%B7%E5%90%8D%EF%BC%89/
http://topic.csdn.net/u/20110701/12/2519a5cc-77d3-4fda-b2d0-88c62edd2556.html
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ssh 不输入密码连接服务器 | 0x64
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