🥇 Linux System Management Commands  What are they? ▷ 2021

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There are 6 system management commands in Linux that you should know. These commands are as follows: ps, free, top, lspci, lsusb, and ls.  All of these commands are used to manage resources of a linux machine.  Some of these are used for troubleshooting purposes, some are used for managing resource usage, and some are used for monitoring.  All are valuable skill for the linux systems engineer.

The difference between Unix and Linux is that Linux is actually open source and Unix is proprietary. Linux has some great benefits over Unix, including the fact that it is free. But, the real kicker is that Linux is really built on the Unix system and has many of the same commands.

Linux is currently one of the most powerful operating systems and therefore has many users. They use this free software, which offers excellent prospects for the future and is characterised by independence, security, reliability and ease of adaptation. It is also a multi-tasking and multi-user system that guarantees many benefits.

However, like most modern operating systems, Linux provides the ability to interact with the system via the command line in what is called the Linux shell. By default, it acts as an access interface between the system and the user, as it contains a command line interpreter that receives all input from the user via the keyboard.

Each shell in turn has its own command language called commands, which greatly simplify system-level tasks. With their help, people will be able to quickly perform various actions to optimize the user experience. It is therefore useful to know what the Linux system administration commands are, and here we will mention each of them.

What are the Linux system administration commands and what are they used for?

In general, Linux commands consist of an instruction that tells the operating system what specific task to perform. Thus, they are defined as specific commands that are used to perform actions through the command line that contains the operating system. System administration commands, on the other hand, are all those basic Linux commands that are used to manage the system optimally.

These are commands used to reboot, shutdown, or program the system through the console. With their help, best practices can be clarified. In this sense, users will be able to perform both simple tasks and more complex operations with total speed and productivity, as opposed to the time it takes to do it manually. These commands, among others, are easy and convenient to use in Linux to get familiar with the system and optimize the overall management of the system.

List of the best Linux system administration commands you need to know

As mentioned earlier, the management commands on a Linux system are essentially commands used for general management of the environment. Therefore, it is important to know which are the most useful and important when working with Linux to get a much more productive environment.

Here is a detailed list of all these commands:

• Registrar: Corresponds to the command that creates log entries, and this creates a line in the system log file by default. The syntax is essentially: logger MENSAJE.
• reset: It performs a quick system reboot. However, to use it without restrictions, the user must have root or superuser privileges. As for the schedule, we emphasize that it is the restart of [OPCIONES].
• Close: This is a Linux instruction that shuts down the system. In this case, users with administrator rights can use it to perform this action. If you want to turn the system off, you can set a specific time for this. It can also issue a stop message with an additional message. The syntax for this is: shutdown [OPCIONES] [TIEMPO] [MENSAJE].
• rtcwake : This is a command that has the ability to start and stop the system automatically. So it follows the instructions for starting, stopping, and running the machine. Essentially, it looks like this: rtcwake [OPCIONES] [MODO] [Tiempo].
• Logging out of the system : Basically, it’s used to disconnect almost instantly. By nature one of the most used commands for system administration in Linux.
• df : Denotes a Linux instruction that controls the display of free disk space. Instead, specify the free space for each partition using the df[OPCIONES] scheme, and if df[OPCIONES][ARCHIVO] is used, the system responds with the free space on the partition where the file is specifically stored.
• for free: This is a command to monitor the Linux system that shows RAM usage. To do this, just use the free system [OPCIONES]. When it is exhausted, Linux moves some of the data stored in RAM to the hard disk.
• dmesg : This is a command that returns a list based on the kernel message buffer. Basically, it shows kernel buffer diagnostic messages and you can also find driver or hardware errors. The following syntax is required for execution: dmesg [OPCIONES].
• uname : This is an instruction for Linux that has the ability to provide kernel information and is therefore used to retrieve kernel information. To filter the output, uname supports several options that must be specified in the uname [OPCIONES] syntax.
• Operating Time : In fact, you can use this command to find out exactly how long the system has been running. This way you can see how long the system has been running since the last boot without rebooting. As for its regulation, we stress that it is a matter of timing of the work.
• you: If you want to know how much space all the directories on your hard drive take up, you can use this command to manage your Linux system. In this case, the scheme used corresponds to the scheme you [OPCIONES] [DIRECTORIO] and you can choose whether or not to expose a particular directory.
• Date: Displays the system date and time. If you need to work with a specific date when you run the program, you can easily set it with this guide and also change its format. If you want to use it, the correct syntax is : Date [OPCIONES] [FORMATO DE SALIDA].
• Who: This is a statement that refers to the presence of those who are logged into the system at a given time. For example. B. convenient to reboot the system without anyone noticing.
• CD : This command is used to easily navigate through Linux files and directories. Enter the name of the directory or the full path to the directory. It’s even a handy guide to moving to a brand new catalog. In general, the syntax to use is: cd photos (for example, to go to the subfolder photos, which is the subfolder documents).
• sudo: This is a statement that allows you to perform tasks that require administrator or root privileges. So it’s short for SuperUser Do, which means what a superuser can do in Linux.
• work : This is a command that displays all current tasks and their specific status. These tasks refer to the process started by the shell.
• to kill: This command allows Linux users to easily close a program, especially if it is unresponsive. So a kill is an instruction that can send a specific signal to a program that is not working properly, telling it to finish in time.
• Up here: Designates the command to display a complete list of running processes and the number of CPUs each uses. When managing a system, it is very useful to be able to monitor the use of resources, and in particular to know which processes should be interrupted due to excessive CPU usage. In other words, it is a utility similar to the Task Manager on Windows computers.
• chown : In addition to system administration, this statement is characterized by the fact that it allows you to optimally manage the users logged on to the system. It is used to change or transfer ownership of a file to a specific user name. This is because in a Linux environment all files belong to a particular user.
• Diff : It is based on an instruction that compares the contents of two files line by line, performing a detailed analysis of the system files to highlight lines that do not match, so that programmers can more easily modify the program without having to rewrite the entire source code. This is an advanced command to manage the system, but in reality it is very cost effective.
• on the spot: This command searches the entire system for files or folders that match a specific query. Therefore, it only searches files to which it has access rights and does not have its own database.
• And that is: Corresponds to a command whose purpose is to find the content of a given word in your own database. In general, it provides a brief description of each content, and while it is not very well known, it is very useful for managing the system at an advanced level.

If you have any questions, leave them in the comments. We’ll get back to you as soon as possible, and it will certainly be helpful to other members of the community. Thank you.

Author : Saharaj Perez

My passion is technology and social media, I research and document the latest news and tips from Facebook, Twitter, Instagram, WhatsApp and all other social media.

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Frequently Asked Questions

What are 10 Linux commands you can use every day?

There are many different tools you can use when working with Linux. However, there a few that you will use more than others, and you will learn many of them very quickly. Even if you are a newbie to Linux, there are 10 commands that you can use daily that will help you. These are the ones that you can use every day. There are countless applications that run on the Linux operating system that can be used to automate various tasks. While the open-source operating systems come with a pre-installed set of commands, you might want to explore the different Linux commands that you can use every day. Here are ten Linux commands you should know. Open a Terminal and Type: cd/home/dir cd/ cd This is a basic command used to navigate the file system. You can navigate to multiple directories by separating each one with a space. You can also open files with the appropriate application by using the following command format: application_name file_name For example, to open the file called report.doc you would use: libreoffice report

What does the Linux command do?

The Linux command is one of the most useful tools for managing your Linux operating system. Windows users who have a working knowledge of commands such as Download, copy, and paste know that these commands are shortcuts that make their lives much easier. Linux has many commands with similar functions, and you can even create custom commands to create your own shortcuts. The Linux command do can appear at first glance to be a tricky command. In this article I will try to explain its functionality. The basic form of the command is do filename, where filename is the name of the file you want to execute. The file to be executed is determined by the system, and is usually the shell. In Ubuntu, this is a shell script called /etc/csh.cshrc.

What are the basic Linux command?

The Linux command line is an optional feature that comes with the open source operating system; it allows for the use of specialized commands to interact with the computer in ways that aren’t possible with a graphical user interface. In this article, we’ll take an introductory look at some of the commands you can use to get around the Linux command line and use it more effectively. Linux is an open-source computer operating system that can be used for everything from web servers to supercomputers, from mobile phones to the International Space Station. It has had a big following in the technology community for many years, but has only recently begun to attract widespread interest from mainstream computer users. This is because Linux is not only free, but it is also powerful, customizable, and extremely easy to use. While the system consists of many parts, the basic layout is the same as other operating systems, so you won’t be fumbling around in the dark looking for where to find things.

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