Installing Linux can be an exciting adventure, but it’s important to know what not to do to keep your system running smoothly. Whether you’re new to Linux or a seasoned user, avoiding certain mistakes can save you a lot of headaches. Here are seven things you should never do after setting up your Linux system.
Key Takeaways
- Avoid copying and pasting commands from the internet without understanding them.
- Don’t add random repositories to your system.
- Never log in as the root user.
- Be careful not to delete important system files.
- Always remember to back up your data.
1. Copy/Paste Random Commands From The Internet
When you first install Linux, it might be tempting to copy and paste commands you find online. This is a bad idea. You never know what those commands might do to your system. They could be harmless, or they could cause serious damage.
Instead, take the time to understand what each command does. This will help you avoid potential problems and make you more comfortable using the terminal. For example, if you’re using a RedHat-based system, you might want to check out some [popular Linux terminal commands](https://omahacomputingsolutions.com/blog/popular-linux-terminal-commands-cli-when-using-redhat-fedora-or-alma-os/) to get started.
Here are a few tips to keep in mind:
- Research the command: Look up what the command does before running it.
- Use trusted sources: Only copy commands from reputable websites or forums.
- Test in a safe environment: If possible, test the command in a virtual machine or a non-critical system first.
Always remember, understanding the commands you run can save you from a lot of headaches down the line.
For those using Ubuntu or Debian-based systems, you can find essential commands in our [Linux terminal guide](https://omahacomputingsolutions.com/blog/popular-linux-terminal-cli-commands-when-using-ubuntu-or-debian-based-oss/). This will help you manage your system more efficiently and safely.
By following these tips, you’ll be better prepared to handle your Linux system without running into unexpected issues. And remember, whether you’re setting up a computer mouse or dealing with computer printers, knowing what you’re doing in the terminal is always a good idea.
2. Add Random Repositories
Adding random repositories to your Linux system can be a risky move. Repositories are collections of software packages that you can install on your system. By default, your Linux distribution comes with a set of official repositories that are maintained and tested by the developers. These are safe to use and ensure that your system remains stable and secure.
However, there are many third-party repositories available on the internet. While some of these can be useful, others can cause serious problems. Adding a random repository without knowing its source can lead to security vulnerabilities, system instability, and even data loss.
Before adding any new repository, it’s important to do some research. Make sure the repository is from a trusted source and that it is actively maintained. Look for reviews or comments from other users to see if they have had any issues. If you’re not sure, it’s better to stick with the official repositories.
Here are some tips to keep in mind:
- Check the Source: Always verify the source of the repository. Trusted sources are usually well-known and have a good reputation in the community.
- Read Reviews: Look for reviews or comments from other users. This can give you an idea of whether the repository is reliable and safe to use.
- Backup Your System: Before adding a new repository, make sure to backup your system. This way, if something goes wrong, you can easily restore your system to its previous state.
Adding random repositories can seem like a quick way to get new software, but it can lead to more problems than it’s worth. Stick with trusted sources to keep your system running smoothly.
For those new to Linux, it’s a good idea to start with the official repositories and get comfortable with the system before exploring third-party options. This will help you avoid potential pitfalls and ensure a more stable and secure experience.
3. Log In As Root
Logging in as root is a big no-no in the Linux world. Why? Because it gives you unlimited power over the system, which can be dangerous if you’re not careful. When you log in as root, you can do anything, including deleting important system files or making changes that could break your system.
Instead of logging in as root, use sudo to run commands with administrative privileges. This way, you only have elevated permissions when you need them, reducing the risk of accidental damage.
Here are some reasons why you should avoid logging in as root:
- Security Risks: If someone gains access to your root account, they can do anything on your system. It’s like handing over the keys to your house.
- Accidental Damage: With great power comes great responsibility. One wrong command as root can mess up your entire system.
- Best Practices: Most Linux distributions, like Ubuntu, come with built-in security measures that discourage logging in as root.
Always use sudo or similar tools to perform administrative tasks. It adds an extra layer of security and helps prevent mistakes.
So, remember, logging in as root is not just risky; it’s unnecessary. Stick to using sudo and keep your system safe and sound.
4. Delete Random Files
Deleting random files on your Linux system can lead to serious problems. Never remove files from directories like /usr/bin, /usr/sbin, /bin, /dev, /lib/, /sbin, and /var. These directories contain important system and configuration files that are crucial for your system’s stability.
If you delete files from these directories, you might end up with a system that doesn’t work properly. Instead, focus on cleaning up your ~/Downloads directory or other places in your home directory. Always make sure to back up your data before deleting anything.
Deleting system files can also render your machine useless and lead you to a black screen with nothing to do or control.
Remember, formatting is more thorough and permanent, while deleting files leaves behind empty space that can be used for new data. So, be cautious and avoid deleting random files to keep your Linux system running smoothly.
5. Ignore Backups
Even though Linux is incredibly stable and secure, your data might not be. You could accidentally delete that book you’ve been working on for months or a report you need to hand in tomorrow. To err is human, so it’s very important that you regularly back up those important files.
I always set up an automated, daily backup for the ~/Documents directory. You should do the same for any directory that houses important files. Fortunately, there are plenty of user-friendly GUI backup solutions (such as Deja Dup) that make this process very simple.
6. Install Desktop Environments That Might Break The Default
When you first install Linux, it’s tempting to try out different desktop environments. They all look so cool and offer unique features. But beware! Installing multiple desktop environments can cause conflicts and break your system.
For example, if you install KDE Plasma on a system that uses GNOME by default, you might end up with duplicate entries in your application menu. This can make your system messy and hard to use. It’s better to stick with the default desktop environment that comes with your Linux distribution.
If you really want to try a new desktop environment, do some research first. Check if it will work well with your current setup. If you find that it might cause issues, it’s best to avoid installing it.
Always remember, stability is key. A broken system can be a nightmare to fix, especially if you’re new to Linux.
Instead of risking your main system, consider setting up a virtual machine to test new desktop environments. This way, you can explore without the risk of breaking your default setup. And if something goes wrong, you can easily start over without any harm done to your main system.
So, keep your system stable and enjoy your Linux experience without unnecessary headaches.
7. Disable SELinux Or AppArmor
When it comes to security on Linux, never disable SELinux or AppArmor. These tools are crucial for keeping your system safe. SELinux (Security-Enhanced Linux) is a mandatory access control mechanism that restricts programs with rules and policies set by the system administrator. AppArmor, on the other hand, confines programs to a limited set of resources. Both are designed to protect your system from unauthorized access and potential threats.
Disabling these security layers can make your system vulnerable to attacks. It’s like leaving your front door wide open. Instead, take the time to understand how these tools work and how they can benefit your system’s security. If you find them too restrictive, you can always adjust their settings rather than turning them off completely.
Remember, out of the box, Linux is quite secure thanks to services like SELinux and AppArmor. So, keep these security measures enabled to ensure your Linux system remains a fortress.
Wrapping It Up
Installing Linux opens up a world of possibilities, but it’s important to avoid certain pitfalls to ensure a smooth experience. By steering clear of these common mistakes, you’ll be well on your way to mastering your new operating system. Remember, Linux is all about learning and growing, so don’t be afraid to explore and ask questions. Happy computing!
Frequently Asked Questions
What should I do first after installing Linux?
The first thing you should do is update your system. This ensures you have the latest features and security patches. Use the package manager that comes with your Linux distribution to do this.
Why shouldn’t I copy and paste random commands from the internet?
Copying and pasting random commands can be risky because you might not fully understand what they do. Some commands can harm your system or compromise your data. Always make sure you understand a command before running it.
Is it safe to add any repository I find online?
No, you should only add repositories from trusted sources. Some repositories might contain malicious software that can harm your system. Always do some research before adding a new repository.
Why is logging in as root a bad idea?
Logging in as root gives full control over the system, which can be dangerous. If someone gains access to the root account, they can do anything on your system. It’s safer to use sudo for tasks that need administrative rights.
Can I delete any file to free up space?
No, you should be careful about which files you delete. Removing system or configuration files can cause your system to malfunction. Stick to deleting files in your home directory if you need to free up space.
How important are backups in Linux?
Backups are very important. Even though Linux is stable, you can still lose data due to accidental deletions or hardware failures. Regular backups ensure you can recover your important files.
Is it okay to install multiple desktop environments?
Installing multiple desktop environments can sometimes cause conflicts and make your system unstable. It’s better to stick with the default desktop environment or thoroughly research compatibility before adding a new one.
Why shouldn’t I disable SELinux or AppArmor?
SELinux and AppArmor are security features that help protect your system from attacks. Disabling them can make your system vulnerable. It’s best to keep these security measures enabled.
