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The system administrator's requirements for network administrators are basically big and comprehensive, and they don't need to be proficient, but they must understand everything. Therefore, in conclusion, a qualified system administrator should have solid theoretical knowledge and application skills in six aspects such as network operating system, network database, network equipment, network management, network security, and application development to be able to do work. To be handy and comfortable. National Vocational Qualification of network management defined members are engaged in computer network operation and maintenance personnel.
System Process Management
In UNIX, the system reports commands including df to report the number of free disk blocks; du to summarize disk usage; nice to change the priority set by a command; and Pstat to report system information such as a node table or process table. sar is used to report the system's activity
Dynamic state such as the use of the CPU and buffer activity; time used to print the past time, system time and command execution time; uptime used to report the system's activity, such as system startup time and running time; vmsfat is used to The number of reports and system statistics, such as the branch points. Ps-aux in BSD UNIX or ps-ef in system V and ps aux in Linux are used to view the process state and its host, and use the kill command to stop an abnormal process in time. In NT, Task Manager is used to view cpu and memory usage and process management. Performance monitor is also used to perform status monitoring and make adjustments in time. It is worth noting that with the expansion of network applications, viruses have become a major threat to network security. For this reason, installing virus detection and removal tools on the network has become a must for network management.

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2018-04-26 21:06:46, views: 191, Comments: 0