Basic Linux administration

Basic Linux administration


Similar to popular operating systems like Windows and Mac OS, Linux distributions also accompany GUI tools which will be used for performing administrative tasks. Adding and removing user accounts, performing
software upgrades, managing hardware, installing new applications, maintaining the system’s performance, and fixing and monitoring security are a number of the activities that an administrator executes. the executive tasks are often performed using the YaST Tool when using SUSE. These functionalities also are available in Ubuntu and Fedora distributions.

Monitoring System Performance

To effectively monitor our computer’s performance, the subsequent aspects should be checked:

CPU and Memory Usage

To see the processes that are consuming the foremost CPU resources and memory allocation, use the highest command. This command displays the CPU load and used memory averages, the method IDs, the share of CPU employed by the methodand therefore the percentage of the memory used. the highest command results are refreshed every 5 seconds. To exit the highest command output display, press Q.
To get a snapshot of the system status at the time the command was used uptime. This command prints the load average for the last one, five, and fifteen minutes.

Hard disk space

Monitor the hard disc space to make sure that there’s enough space for the system to perform tasks like logging and backups. Use the df -h command to validate the disc spaceIn the monitoring, set specific thresholds at which we, because the administrator will take an action. for instance, once the used disc space percentage reaches a particular threshold, like 80%, do a file cleanup to release disk space. If the CPU reaches the allowed threshold, investigate which processes are consuming the resources and do the required action (e.g. await a process to end, kill a process, etc.). this is often almost like killing processes in windows using the Task Manager.

User Management

Linux automatically creates multiple user accounts upon installation, albeit we are the sole one using your computer. The system uses these accounts for running programs. Different accounts safeguard the system,
including files and directories, from unauthorized access. Users are often assigned to groups for easier facilitation. To add, modify, or delete a user or group account, we will either use the GUI or roll in the hay via the instruction. As a beginner, it might be good for us to undertake out both so we will see which one is that the best method for us.

Managing Users and Groups Via GUI

Open YaST if we are using SUSE or the equivalent Settings Menu in our distribution. Click on the safety and Users or any similar User Management category. Click on the Add user button and provide the required information like the user’s full name, preferred username, and password. we will explore and configure additional information like login attempt limit, password settings, and user groups. Once done, click on the OK button to continue creating the user account. We can also modify or delete an account using the GUI. Perform the required account modifications and click on on the OK button to proceed with the changes. To create, modify, or delete a gaggle, select Groups rather than users. The photo below shows the YaST screen for adding a replacement group. Provide the required information and click on on the OK button to end creating the group.

Mansoor Ahmed is Chemical Engineer, web developer, a writer currently living in Pakistan. My interests range from technology to web development. I am also interested in programming, writing, and reading.
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