Category: Tutorials

Linux Mint is one of the popular open-source Linux distributions. One of the positive points of this operating system is its adaptability. It also has an intuitive and user-friendly environment that makes users who move from systems like Windows to Linux not get confused. We will also try to review the Linux Mint operating system for you and guide you on how to get started.

A Brief Explanation of Linux Mint

As we mentioned here, Linux Mint is a popular open-source operating system (OS) based on the Linux kernel and can be installed on Linux VPS. This operating system is built on top of the Ubuntu distribution, which itself is based on Debian. This means it inherits much of Ubuntu’s stability and package management system.

It is a powerful system with full multimedia support out of the box, suitable for moderate and advanced users. Having an impressive user interface, stability, and powerful software center has made it popular.

Starting Linux Mint is a straightforward process, So let’s learn how to start this amazing distribution:

Step 1- Choosing the Proper Linux Mint Edition

Linux Mint has three different versions, including Cinnamon, Mate, and XFCE. The difference between these three versions is their desktop environment, which defines the functions and user interface. Let’s examine these three editions of Linux Mint:

• Cinnamon: It is the most modern version of Cinnamon Mint, which has the most features. At the same time, it offers a balance between speed and features and has an intuitive and comfortable feel.
• Mate: This version has a classic desktop environment and is lighter than Cinnamon. If you have limited hardware capabilities, Mate is the best choice.
• XFCE: The lightest version of Linux Mint is XFCE. This version is very suitable for old systems because these systems may have problems with the previous two versions.

So, choose the best edition which is suitable for your system.

Step 2- Downloading Linux Mint OS

Now that you have chosen the right version, you should go to the Linux Mint download page.

Now, download the version from there. To be able to do this faster, choose a mirror that is closest to you. Select it, and you will see that the iso file will start downloading:

Step 3- Verifying the ISO file

It is not mandatory to do this step, but you can make sure of the security and integrity of the downloaded ISO file. MD5 checksums are provided for each ISO file. Therefore, after downloading, you can confirm the ISO file with the checksum tool.

Step 4- Creating a Bootable USB or DVD

To be able to install Linux Mint, you need to create a bootable USB or DVD. To do this, you can use tools like Rufus or Balenaetcher. The USB drive used must have at least 2 GB of free space. Or if you want to use a DVD, make sure it is empty.

Step 5- Installing Linux Mint

In this section, to start the installation, you need to reboot the DVD or USB file on the computer. Meanwhile, make sure your bios settings are set to boot from USB or DVD. You should now see the Linux Mint logo loading.

After downloading this operating system, you can see the test or installation option. If you need to test, click the corresponding option; otherwise, choose the Install Linux Mint option to continue the installation.

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Follow the next instructions on the screen in order and select your appropriate language. Then select your keyboard layout:

Now, decide your installation type. In this section, Erase disk and install Linux Mint is usually selected:

Finally, create your account and start the installation by giving your username and password.

The installation process will take some time, so be patient. Restart your system to apply changes:

Note: After restarting, the system will prompt you to remove USB and press Enter.

This is it! As you get more familiar with the system, you can explore advanced features, customize your desktop, and get the most out of your operating system experience.

Troubleshooting Issues about Booting Linux Mint

Boot issues with Linux Mint can be caused by various factors, including hardware compatibility, configuration problems, or software issues. Here are some common boot issues and potential solutions:

1- Incompatible or missing graphics drivers can cause boot problems, especially if you’ve recently updated your kernel or graphics drivers.

Solution:

Boot into recovery mode, uninstall or reinstall graphics drivers, or try using the open-source drivers. You can also edit the GRUB configuration to add kernel parameters like nomodeset to temporarily disable the kernel mode setting.

2- GRUB is a common boot loader used in many Linux distributions, including Linux Mint. If there’s an issue with GRUB, it may prevent the system from booting.

Solution:

You can try reinstalling GRUB or repairing it using a live CD/USB. Boot into a live environment, open a terminal, and use commands like grub-install and update-grub to reinstall and update GRUB.

3- Filesystem corruption or errors can prevent the system from booting successfully.

Solution:

Boot from a live CD or USB, open a terminal and run filesystem checks. For example, for an ext4 filesystem, you can use the e2fsck command.

sudo e2fsck /dev/sdXY

Replace /dev/sdXY with the actual partition device.

Conclusion

As mentioned in this section, the Linux Mint operating system is a versatile and user-friendly system that everyone from beginners to professionals can use. The installation process is also very simple, and you can do it successfully in a few simple steps. So install Mint with this guide and enjoy it.

One of the best desktop environments to use in Linux is Gnome. This platform is also the default GUI for Linux distributions such as Fedora, Debian, or Ubuntu. So it is very useful. There may have been a time when you have chosen a headless system or a server for your work and now you want to use a graphical interface. So read this article carefully because you can get a user interface in your Linux system with two different methods and make your work easier. The focus of this post is how to install Gnome on Debian.

Prerequisites

Here are the requirements to have a successful installation process of Gnome on Debian:

• An up-to-date Debian distro on Linux VPS
• Root access or an account with sudo privileges

2 Practical Methods to Install Gnome on Debian

As we mentioned before, there are two different ways to install Gnome on Debian. These methods are Tasksel and apt.

Apt is a default package manager and most of you are familiar with that. but what about Tasksel? Tasksel is a practical tool and gives you the opportunity to install different desktop environments on your system. Let’s analyze and see how we can install Gnome using These tools.

Method 1: Install Gnome Using Tasksel

Tsksel is a great tool with easy instructions to install Gnome on Debian. It doesn’t require technical knowledge. So, just run it and choose the proper desktop environment. The advantage of Tasksel is that you can choose multiple desktops at the same time. Now, let’s start the process.

Tasksel is installed by default on Debian, so there is no need to install it. But if for some reason you don’t have it in your system, you can use the following command and install it:

sudo apt install tasksel

As you installed Tasksell, the next step is to run it on your Debian system. This command will launch Tasksel directly:

sudo tasksel

Another way to install Gnome with Tasksel is by using the following command:

sudo tasksel install desktop gnome-desktop

This will install GNOME and all its dependencies. Of course, the download and installation stage takes a little time, so you have to be patient. After installation, type the following commands to restart the system and apply the changes:

sudo reboot

Now you will see the Tasksel panel and the list of desktop environments:

Here, you can select the Gnome desktop environment. You can use the arrow keys to scroll between the options of the Tasksel list. You should use the spacebar key to select Gnome and press OK button:

Now the installation of Gnome will start:

Then use the following command to reboot your system after the installation:

sudo reboot now

You will enter the Login screen, so choose Gnome from the upper right icon:

Login to Gnome as shown below:

Tip: In this section, we have used Lightdm display manager, which also works with gnome. But for better support and performance, you can use gdm3, which is the default display manager for gnome.

Now you can setup Gnome installation.

Method 2: Install Gnome Using APT

Using the apt command to install gnome is very easy and straightforward. Debian has the GNOME packages in its repositories, so just run the following command as sudo to install it.

Updating the System

Before the installation using apt, it is recommended to update your system:

sudo apt update

Install Gnome Via APT

Now you can go to the installation stage and install GNOME in your Debian system by applying the following command:

sudo apt install gnome

After installation, reboot your system:

sudo reboot

It’s time to authenticate and insert a password. After entering your password, press Enter:

Press the Y to continue the installation. The installation will start immediately:

Tip: You should keep the terminal open during the installation process. Closing it will interrupt the installation.

Troubleshooting Issues About Gnome on Debian

Installing GNOME on Debian is generally a straightforward process, but issues can sometimes arise. Here are some common problems and solutions:

1- The GNOME installation might not be complete, leading to missing components or features.

Solution:

Ensure that you install the gnome package along with the gnome-core package for a minimal installation. You can use the following command:

sudo apt-get install gnome gnome-core

2- Problems with graphics drivers can cause issues with GNOME.

Solution:

Ensure that your graphics drivers are correctly installed and configured. You can use the lspci command to identify your graphics card and then install the appropriate drivers.

3- Dependency issues or problems with the Debian repositories can lead to incomplete installations.

Solution:

Update your package repositories and upgrade your system before attempting to install Gnome:

sudo apt-get update sudo apt-get upgrade

Conclusion

In this post, we discussed the two main methods for installing GNOME on Debian. As you can see, the installation process is very easy. Gnome is a desktop environment that can be used on Linux distros and will help you understand and manage your operating system or server. We hope this content was helpful to you. Happy coding!

If you intend to change and configure your IP address in the CentOS system, you should know that the IP configuration in CentOS is done automatically. So, to change your IP in CentOS, you have to do it manually. This article examines how to change the IP address with possible methods. So apply the below steps carefully to achieve your desired result.

Prerequisites

If you want to change the IP address on CentOS distribution you have to prepare some requirements like:

• Up-to-date CentOS distribution in Linux VPS
• A user with root access

3 Simple Methods to Change IP Address on CentOS

You can configure and change your IP address using a number of options or methods available in this article. So, keep studying:

Method 1: Change IP Address on CentOS Via Network Configuration File

First, run the following command to determine the name of your network adapter:

sudo lshw -class network -short

Now use a suitable text editor to open the configuration file of your network adapter and replace x with the name of your network adapter:

nano /etc/sysconfig/network-scripts/ifcfg-ethX

As you can see below, you should configure the variables in the file:

DEVICE=eth0
NAME=eth0
Type=Ethernet
IPADDR=192.168.1.20
NETMASK=255.255.255.0
GATEWAY=192.168.1.1
DNS1=192.168.1.1
DNS2=8.8.4.4
ONBOOT=yes
BOOTPROTO=none
USERCTL=no
PEERDNS=yes

Below are the most common configuration parameters with explanation:

BOOTPROTO= none, bootp or dhcp
IPADDR=
DEVICE=<name> –> where <name> is the name of the physical device.
DNS{1,2}=<address> –> where <address> is a name server address to be placed in /etc/resolv.conf
GATEWAY=
MACADDR=<MAC-address> –> Where <MAC-address> is the hardware address of the Ethernet device in the form AA:BB:CC:DD:EE:F
NETMASK=

ONBOOT=<answer> –> Where <answer> is one of the following:
yes — This device should be activated at boot-time.
no — This device should not be activated at boot-time.

PEERDNS=
yes – Modify /etc/resolv.conf if the DNS directive is set. If using DHCP, then yes is the default.
no – Do not modify /etc/resolv.conf.

USERCTL=
yes  – Non-root users are allowed to control this device.
no – Non-root users are not allowed to control this device.

If you have the network manager service and run it, you must configure it so that the network manager does not manage this interface (eth0). You can do this by adding the following line:

NM_CONTROLLED=no

Use the command below to stop the network manager service:

sudo systemctl stop NetworkManager

Save the changes, shutdown, and bring back the interface:

sudo ifdown eth0 && sudo ifup ethX

Now stop the network manager service using the following command:

sudo systemctl stop NetworkManager

Go through this command to check the current adapter setting:

ip addr show

Method 2: Change IP Address on CentOS Via IP and ifconfig commands

Note that the ifconfig command is deprecated, but it is still part of the net-tools package and can be installed with this command:

yum -y install iproute

For more clarification, we will show both iptools and ifconfig commands.

If you want to show IP address-related information, use the following command:

ifconfig
ip addr

Then to bring up or down an interface, use the command below:

sudo ifconfig ethX down
sudo ip link set dev ethX down

You can set the static IP using ip or ifconfig commands. be careful, because changes made with these two are not persistent against reboots.

sudo ifconfig ethX 192.168.1.100 netmask 255.255.255.0
sudo ip addr add 192.168.1.100/24 dev ethX

To clear the IP information, run the following command:

sudo ifconfig ethX del 192.168.1.100
sudo ip addr del 192.168.1.100/24 dev ethX

For destinations without static routes defined, you set the default route using ip and ifconfig commands:

sudo route add default gw 192.168.1.1
sudo ip route add default via 192.168.1.1

Method 3: Change IP Address on CentOS Via Network Manager

The network manager service is used for CentOS management and for dynamic configuration and control of network devices. This service can also be used to keep active connections available.

You can remove the network manager, but if you just want to disable and then remove it, use the command below:

systemctl disable NetworkManager
systemctl remove NetworkManager

In this section, we will mention commands so that you can use the network manager service using them.

First, you should check the status of the network manager using these commands:

systemctl status NetworkManager
sudo systemctl start NetworkManager

To bring network interfaces up and down use the network manager with the commands below:

sudo nmcli connection down ethX
sudo nmcli connection up ethX

Configuring A Static IP Via Network Manager

Use this command to list the current connections:

nmcli con show

Enter UUID or network name from step 1 to delete connections:

nmcli con delete eth0

By running the command below, you can create a network using ethx:

nmcli con add type ethernet ifname ethX con-name ethx \ autoconnect yes ip4 192.168.1.100 gw4 192.168.1.1

Now you need to configure DNS. You have to do the network settings manually:

nmcli con mod ethX ipv4.method manual 
nmcli con mod ethX ipv4.dns "8.8.8.8 8.8.4.4"

Use this command to restart the network:

sudo nmcli con down ethX && sudo nmcli con up eth0

Running the following command, helps you to view the connection ethx:

nmcli con show ethX

Troubleshooting Issues About Change IP Address on CentOS

Here are some problems with changing IP address CentOS:

1- Lost connection after IP changes.

Solution:

If you lose connection to the server after changing the IP, it could be due to an incorrect configuration. Revert the changes and check for typos or mistakes.

2- Incorrect Syntax in Configuration File

Solution:

Ensure that the syntax in the configuration file is correct. A small typo can cause issues.

3- There may be firewall problems

Solution:

Update firewall rules to allow traffic to the new IP address. Use the firewall-cmd or iptables command to configure firewall settings.

Conclusion

As mentioned in this article, IP is configured automatically and the service used to manage CentOS is called network manager. But if you need to change your IP, you have to do it manually. We also tried to show you how to change and configure the IP in three different ways. So follow the steps carefully and if you have any questions, contact us in the comments section.

Traceroute, is a computer network diagnostic tool that tracks the path of network packets from a source to a destination. It helps identify the route taken by packets as they travel across the internet or any IP-based network. Traceroute also provides information about the time taken for each hop (intermediate network node) that the packets encounter on their journey and reveals potential network issues or congestions. This information is useful in troubleshooting network problems and determining the exact location or point of failure in a network connection. In the rest of this article, you will learn how to master and work with Traceroute on CentOS intelligently and step by step.

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Traceroute Options and Flags

Some common options and flags used with the traceroute command are:

-I: Use ICMP echo requests instead of UDP datagrams. This is useful for systems that block UDP packets.

-T: Use TCP SYN packets instead of UDP datagrams. This is useful for systems that block UDP or ICMP packets.

-4: Use IPv4 addresses only.

-6: Use IPv6 addresses only.

-n: Do not resolve IP addresses to their hostnames.

-w <timeout>: Set the timeout value in milliseconds for each probe. Default is 5 seconds.

-q <probes>: Set the number of probes per hop. Default is 3 probes.

-m <max_ttl>: Set the maximum number of hops to reach the destination. Default is 30 hops.

-f <first_ttl>: Set the initial time-to-live (TTL) value for the first probe. Default is 1.

-p <port>: Set the destination port number for the UDP or TCP probe packets. Default is 33434 for UDP and 80 for TCP.

Prerequisites for Traceroute on CentOS

To use Traceroute on CentOS, you must have the following prerequisites:

– A Linux VPS Server that runs CentOS.

– Root access to install and run the required packages.

– A working internet connection.

Installing Traceroute on CentOS: Step-by-Step Guide

Step1: At the first step, you should update your CentOS system using the following commands:

sudo yum clean all
sudo yum update

Step2: Now you can install Traceroute on CentOS easily and using the below command:

sudo yum install traceroute

Step3: Once the installation is complete, you can use the Traceroute utility on CentOS by opening the terminal and running the traceroute command followed by the target host or IP address. For example:

traceroute google.com

This command will display a list of IP addresses, indicating the path that packets take from your computer to the target host or IP address. To discover more usage, showcase the help for essential command-line options:

traceroute --help

Conclusion

In conclusion, Traceroute on CentOS is a useful network troubleshooting tool that allows users to track the path of their internet packets. It helps identify network bottlenecks, latency issues, and determine the effectiveness of network routing. With its ability to display hop-by-hop information, Traceroute on CentOS is an essential tool for network administrators and users.