Linux system logging changed with the introduction of systemd. Learn how to use the journalctl command to read and filter system log messages.

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How the ip Command Works

With the ip command, you can adjust the way a Linux computer handles IP addresses, network interfaces controllers (NICs), and routing rules. The changes also take immediate effect — you don’t have to reboot. The ip command can do a lot more than this, but we’ll focus on the most common uses in this article. The ip command has many subcommands, each of which works on a type of object, such as IP addresses and routes. There are, in turn, many options for each of these objects. It’s this richness of functionality that gives the ip command the granularity you need to perform what can be delicate tasks. This isn’t ax work — it calls for a set of scalpels. We’ll look at the following objects:

• Address: IP addresses and ranges.
• Link: Network interfaces, such as wired connections and Wi-Fi adapters.
• Route: The rules that manage the routing of traffic sent to addresses via interfaces (links)

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Why You Should Back Up the Local Group Policy Editor Settings

The Local Group Policy Editor is a handy Windows utility that allows you to configure group policy settings on your computer. It’s mainly aimed at network administrators, but it can also be used by individuals to manage how their machine performs. You can use the Local Group Policy Editor to change password requirements, configure startup programs, define which applications and settings a user can change, and more. Because the Local Group Policy Editor manages a wide range of necessary settings, it’s important to back it up.

Doing so gives you the freedom to try out different apps, unstable Windows releases, and experimental features without worrying about losing your settings. Even if something goes wrong, you can quickly restore the Local Group Policy Editor settings to bring your computer back to a known good state. It also means that you can transfer the settings to another machine, if you have got a new computer or want to deploy the same configuration across multiple systems.

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The date command is found in the Bash shell, which is the default shell in most Linux distributions and even macOS.

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Data Saver mode on Android helps save your mobile internet data. It’s a special mode that ensures apps and services only use background data when on Wi-Fi. However, if you have an unlimited data plan, Data Saver isn’t necessary.

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Want to be able to work on your spreadsheets on the web? If so, convert all your Microsoft Excel spreadsheets to Google Sheets. After you complete this simple process, other people can edit your spreadsheets and you can use Sheets-exclusive functions.

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For those who don’t know what Steam is, it’s an online platform by Valve where you can download and play thousands of games, and also discuss them with the community. Steam is also great for Linux users because you can use Proton to play Windows games on Linux. The Proton compatibility layer is changing the gaming landscape on Linux, and you can take advantage of it by installing Steam on your system.

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To add a user to a group, open the Terminal, then type “sudo usermod -a -G examplegroup exampleusername” into the window. Replace “examplegroup” and “exampleusername” with the group and username you want to modify.

Changing the group a user is associated to is a fairly easy task, but not everybody knows the commands, especially to add a user to a secondary group. We’ll walk through all the scenarios for you. User accounts can be assigned to one or more groups on Linux. You can configure file permissions and other privileges by group. For example, on Ubuntu, only users in the sudo group can use the sudo command to gain elevated permissions.

If you’re using a new Linux laptop, you might have some type of GUI interface to configure these settings (depending on the distribution that you’re running, at least) but realistically it’s almost always easier to just drop down to the terminal and type out a few commands, so that’s what we’re showing you today.

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Linux distributions normally display the username of the current user in the Terminal as (Username)@ComputerName. If your Linux distribution doesn’t, run “who” or “whoami” in the Terminal to get the username instead. You can use the “w” command to get even more detailed information.

If Linux means anything, it means choice. You can achieve even a simple task like identifying the current user in many ways. This tutorial will show you how to use some of the quickest and easiest methods.

Why would you need to find the identity of the current user? In many cases the owner of the computer is the only user and, without getting too existential, they probably know themselves. Perhaps, but it is also common for people to create additional user accounts to allow family members to have access to the computer. And, if you’re connected to a remote shell on a server somewhere, you may need a quick reminder of the username you’re logged in with. If you see a logged in session with no one in attendance, how do you identify the current user from the command line?

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