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http请求过程如下: # curl -v http://www.baidu.com % Total % Received % Xferd Average Speed Time Time Time Current Dload Upload Total Spent Left Speed 0 0 0 0 阅读全文
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sudo允许用户以其他用户的身份(比如root)执行命令,比如切换用户、执行命令、读写文件等; 配置 sudo配置在:/etc/sudoers ## Sudoers allows particular users to run various commands as## the root user, 阅读全文
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官方:https://www.ssh.com/ssh/ The SSH protocol uses encryption to secure the connection between a client and a server. All user authentication, commands 阅读全文
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官方:http://ambari.apache.org/ The Apache Ambari project is aimed at making Hadoop management simpler by developing software for provisioning, managing, 阅读全文