linux foundation certified system administrator

structure of this file is this: Each line represents an account, a few lines will represent a few accounts in your system! However, it is important to note that many of the accounts in the system must be required, we can simply call him a system account, such as bin, Daemon, ADM, nobody and so on, these accounts are required for the normal operation of the

, then things can become, rely on the defeat. I will pay no less than anyone's efforts, with the lovely readers to write and perfect this book.Lead everyone from the "0" Foundation to learn the Linux system, with a large number of Linux-related experiments to gradually master the operation and maintenance of the road.T

Article Title: How to Become a qualified Linux system administrator. Linux is a technology channel of the IT lab in China. Includes basic categories such as desktop applications, Linux system management, kernel research, embedded

One of the most important tasks for Linux system administrators is to be responsible for system kernel upgrades. It is very important for the stability of Linux system to do well to upgrade the kernel of the system. But few dared

Article Title: System Administrator's Linux system maintenance manual. Linux is a technology channel of the IT lab in China. Includes basic categories such as desktop applications, Linux system management, kernel research, embedde

Users and system administrators often need to run commands regularly. For example, a system administrator might want to run a program that clears the directory of staging files (/tmp and/var/tmp) from old files to avoid full disk because not all programs clean up their staging files correctly. Cron service is doing this. Each user has a crontab that lists the co

Article Title: How does a Linux system administrator know what a user is doing. Linux is a technology channel of the IT lab in China. Including desktop applications, Linux system management, kernel research, embedded systems, open

Changing Linux System Administrator skills How long ago did you compile the kernel? The answer to the new generation of Linux administrators is simple: I have not compiled the kernel. I have never compiled the kernel. Of course I am not sure about it. I really can't think of why I need a custom kernel, so I just used m

Tags: tools nis span pos style lam Extensible pack sedLinux system administrator Prerequisites:Linux System Administration Toolkit Series Rollup Linux system administrator must seeVandyke SecureCRT 6.1.3 Attached special documents

else can edit the file. Once you have completed the editing work, it will parse the file to find out if there are any simple errors. Editing sudo files is much safer than just using any old text editor.The file contains many parameters. You can specify which users or which user help can execute which commands. We're going to give ourselves permission to access sudo, so just add it at the bottom:Username all= (All) //%wheel all= (All) // Grant sudo access to all users who belong to the

ourselves permission to access sudo, so just add it at the bottom: Username all= (All) all//grants sudo access to the user "username" %wheel all= (All) all//grants sudo access to all users belonging to the wheel user group The user name you specify now will be able to use all of the root permissions. You can also allow a user or group of users to have sudo access to a particular service or server instead of the all parameter, but that's another topic.Several optionsAs with any

application. The persistence layer (data access layer), the business logic layer, the presentation layer and the expression layer adopt the MVC architecture pattern, differentiate into the model, the view, the control three parts Outlines how you can import Internet traffic into a subnet. Nat principle Do you know anything about virtualization? Does it use? Virtualization refers to virtualizing a computer into multiple logical computers through virtualization technology. What is the

and outbound traffic. You can install it using the following method:Yum Install nloadOrsudo apt-get install nloadSmokeping.Smokeping can keep track of your network latency and visualize them. There are various delay measurement plugins developed for the smokeping. If the graphical user interface is important to you, there is now a plug-in being developed to implement this functionality.Mobaxterm.If you're working in a Windows environment all day. You may feel the limitations of Windows under th

/]:[http://sebastien.godard.pagesperso-orange.fr/]:[http://goaccess.io/]:[[]: http://whowatch.sourceforge.net/[http://www.webmin.com/]:[Https://github.com/opsengine/cpulimit]:[https://www.serverdensity.com/server-monitoring/]:[http://www.opennms.org/]:[http://sysusage.darold.net/]:[Up]: http://www.pcp.io/[Https://userbase.kde.org/KSysGuard]:[+]: http://munin-monitoring.org/[http://www.nagios.org/]:[http://www.zenoss.com/]:[http://www.cacti.net/]:[[i]: http://www.zabbix.com/[https://collectd.org/

First Level: General administrator1, Characteristics: can understand the concept of zoning, know how to install Linux system and common database, desktop Manager, application software, etc., can do some basic configuration (such as network, printer, modem, etc.), refer to the information at hand to install and configure common services (such as NFS, HTTP, FTP, TELNET, SSH, LDAP, NIS, mail Service, SAMBA, pr

visualize inbound and outbound traffic. You can install it using the following method:yum install nloadOrsudo apt-get install nloadSmokeping.Smokeping can keep track of your network latency and visualize them. There are various delay measurement plugins developed for the smokeping. If the graphical user interface is important to you, there is now a plug-in being developed to implement this functionality.Mobaxterm.If you're working in a Windows environment all day. You may feel the limitations o

services, aiming to promote the process of Guangdong's Linux industry and improve the application level of Linux technology. This project will comply with the National Computer Information high-tech examination standards and requirements, the guidance center for vocational skills appraisal of Guangdong Provincial Department of Labor and Social Security and the Public Service Technical Support Center for

The Linux system administrator should know the monitoring tool. if you want to monitor the performance of the Linux server, try the built-in shell commands and some additional tools. Many Linux distributions have tons of monitoring tools. These tools provide measurable infor

15 practical Linux/Unix tape management commands for the system administrator Tape equipment should only be used for regular file archiving or data is transferred from one server to another. Generally, tape devices are connected to Unix machines and controlled by mt or MTCs. We strongly recommend that you back up all data to disks (maybe in the cloud) and tape de

test whether your domain Name system is working properly. Domain Name server (DNS) helps resolve URLs to a set of application servers. However, you will find that some URLs cannot be parsed, which can lead to application connectivity issues. For example, suppose you try to access your database from the host of the application. You receive a "Cannot parse" error. To troubleshoot, you try to use the Dig (DNS query tool) or nslookup (query Internet name