linux相关收藏

http://zhumeng8337797.blog.163.com/很不错的一个linux相关的博客

http://www.cnblogs.com/StanBlogs/archive/2011/06/14/2080986.html

http://www.itpub.net/tree/index_205_1/

http://www.cnblogs.com/meihua/articles/1943397.html

//yum 删除mysql
yum remove -y mysql
//查询是否安装 mysql 
rpm -qa mysql
  今天用scp命令复制时,提示如下错误:
  @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@
  @    WARNING: REMOTE HOST IDENTIFICATION HAS CHANGED!     @
  @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@
  IT IS POSSIBLE THAT SOMEONE IS DOING SOMETHING NASTY!
  Someone could be eavesdropping on you right now (man-in-the-middle attack)!
  It is also possible that the RSA host key has just been changed.
  The fingerprint for the RSA key sent by the remote host is
  25:ab:2e:55:30:11:a0:84:d8:45:2f:5b:e2:47:eb:1e.
  Please contact your system administrator.
  Add correct host key in /root/.ssh/known_hosts to get rid of this message.
  Offending key in /root/.ssh/known_hosts:1
  RSA host key for 192.168.238.136 has changed and you have requested strict checking.
  Host key verification failed.
  lost connection
  开始我以为是命令错误,仔细一看,原来是密钥验证错误,可能是我的账号信息做过更改。
  找到该用户家目录下的如下的ssh连接文件夹:
  1. cd ~/.ssh/
  2. vi known_hosts
  3. 找到和远程主机ip一致的密钥保存信息,直接dd删除,然后:x保存退出
  4. 重新连接,输入密码,发现连接成功
  问题解决
    PS 原来之前创建过一个虚拟机 IP 存在过

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