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Category: Centos

How to Fix Boot Problems on CentOS

Posted on August 14, 2023August 19, 2023 By oarsman No Comments on How to Fix Boot Problems on CentOS

CentOS is a popular Linux distribution that is known for its stability and security. However, even the most stable operating systems can experience problems from time to time. One common problem that CentOS users may encounter is a boot problem. A boot problem is an issue that prevents your CentOS system from starting up properly….

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Centos

How to Recover CentOS from Emergency Mode

Posted on August 10, 2023 By oarsman No Comments on How to Recover CentOS from Emergency Mode

Encountering a situation where CentOS enters emergency mode can be a disconcerting experience for any system administrator or user. Emergency mode indicates that the system has encountered issues during booting that require immediate attention and resolution. In such scenarios, understanding the steps to recover from emergency mode is essential to restore the normal functioning of…

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Centos

How to Install cPanel on CentOS

Posted on May 19, 2023August 8, 2023 By oarsman No Comments on How to Install cPanel on CentOS

About cPanel cPanel is a web-based control panel designed to simplify the management of web hosting and server administration tasks. It provides a user-friendly interface that allows users to effortlessly manage their websites, domains, email accounts, databases, and other aspects of their hosting environment. With cPanel, users can perform a wide range of functions, such…

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Centos

How to Install libstdc++ on CentOS

Posted on March 1, 2023March 1, 2023 By oarsman No Comments on How to Install libstdc++ on CentOS

What is libstdc++ libstdc++ is a library of functions and classes that is an integral part of the GNU Compiler Collection (GCC) on Linux systems. It contains implementation code for standard C++ library functions, which are required by C++ programs to run. The library includes features such as input/output, strings, numeric algorithms, and memory management….

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Centos

How to Check the Firewall Status on CentOS

Posted on February 10, 2023February 10, 2023 By oarsman No Comments on How to Check the Firewall Status on CentOS

How Important is a Firewall A firewall is important for any operating system, including Linux, as it acts as a barrier between the internal network and the external network, such as the Internet. It monitors and controls the incoming and outgoing network traffic based on predefined security rules. Having a firewall in place provides an…

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Centos

How to Install Brew on CentOS

Posted on January 31, 2023January 31, 2023 By oarsman No Comments on How to Install Brew on CentOS

What is Brew (Homebrew)? Homebrew, also known as brew, is a package manager for macOS, but it can also be installed on Linux distributions like CentOS. A package manager is a tool that makes it easier to install, update, and manage software on a system. With Homebrew, you can install software packages and their dependencies…

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Centos

How to Extend LVM Partition on CentOS

Posted on January 13, 2023January 14, 2023 By oarsman No Comments on How to Extend LVM Partition on CentOS

What is LVM Partition? LVM, or Logical Volume Manager, is a feature in the Linux operating system that allows for the management of disk storage space in a more flexible and dynamic way. LVM partitions, also known as logical volumes, are created within volume groups, which are made up of one or more physical storage…

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Centos

How to Install EPEL Repository on CentOS

Posted on January 5, 2023January 5, 2023 By oarsman No Comments on How to Install EPEL Repository on CentOS

Extra Packages for Enterprise Linux (EPEL) Extra Packages for Enterprise Linux (EPEL) is a repository of additional software packages for CentOS and other Red Hat-based Linux distributions. It is maintained by the Fedora Project, a community-driven free software project that is sponsored by Red Hat. The EPEL repository provides a wide range of additional software…

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Centos

How to Boot CentOS in Single User Mode

Posted on December 26, 2022December 26, 2022 By oarsman No Comments on How to Boot CentOS in Single User Mode

Single User Mode Single user mode, also known as maintenance mode or rescue mode, is a boot option for the CentOS operating system that allows you to boot the system with minimal services and resources. Only the most essential system processes are started, and the system runs with a single non-root user account in this…

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Centos

How to List Installed Packages on CentOS

Posted on December 23, 2022December 23, 2022 By oarsman No Comments on How to List Installed Packages on CentOS

The set of packages that are installed by default on CentOS depends on the version of CentOS and the installation method that you choose. In general, CentOS is a minimalistic distribution, so the default installation includes only a minimal set of packages. The exact set of packages included in the default installation may vary depending…

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Centos

How to Add User to Group on CentOS

Posted on December 21, 2022December 23, 2022 By oarsman No Comments on How to Add User to Group on CentOS

Groups on CentOS

On a CentOS system, groups are used to manage user access to system resources. A group is a collection of users that share common access permissions to resources such as files, directories, and devices.

Groups are created and managed with the groupadd, groupmod, and groupdel commands. Each user on the system is a member of at least one group and can be a member of additional groups. By default, a user is a member of the group with the same name as the user’s username.

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Centos

How to Know Which Process is Using a Port on Linux

Posted on December 21, 2022December 23, 2022 By oarsman No Comments on How to Know Which Process is Using a Port on Linux

To find out which process is using a specific port on a Linux system, you can use the lsof command, which stands for “list open files.” lsof lists information about files that are opened by processes running on the system. Here’s an example of how to use lsof to find out which process is using…

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Arch Linux, Centos, Debian, Fedora, Gentoo, Linux Mint, Open Suse, Red Hat, Ubuntu

Twenty Most Used Linux Commands

Posted on December 20, 2022December 23, 2022 By oarsman No Comments on Twenty Most Used Linux Commands

Who Created Linux and Its Commands?

Linux is a free and open-source operating system created by Linus Torvalds in 1991. Torvalds, who was a computer science student at the University of Helsinki at the time, wrote the original code for the Linux kernel (the core of the operating system) as a personal project. The kernel was released under the GNU General Public License (GPL), which allows anyone to use, modify, and distribute the software.

Since then, the Linux operating system has evolved and grown through the contributions of a large and diverse community of developers. Many of the commands that are used in the Linux command line were written by these developers, either as part of the core operating system or as part of additional software packages. There are also many third-party utilities and tools that have been developed for use on Linux systems.

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Centos, Debian, Fedora, Linux Mint, Open Suse, Red Hat, Ubuntu

How to Restart Apache on CentOS

Posted on December 20, 2022December 23, 2022 By oarsman No Comments on How to Restart Apache on CentOS

What is Apache?

Apache is a popular open-source web server software that is widely used on Linux systems. It is used to serve web pages and other content over the Internet or a local network.

Apache is known for its flexibility, performance, and security. It can be used to host websites and web applications of all sizes, from small personal blogs to large enterprise applications. It supports a wide range of technologies, including PHP, Python, Perl, and Ruby, and can be easily extended with modules to add additional functionality.

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Centos

How to Access Centos GUI Remotely from Windows

Posted on December 19, 2022December 23, 2022 By oarsman No Comments on How to Access Centos GUI Remotely from Windows

A Brief Description of CentOS GUI

CentOS GUI is a graphical user interface (GUI) for the CentOS operating system. A GUI allows users to interact with the operating system using visual elements such as icons, buttons, and menus, rather than typing commands into a command-line interface. The CentOS GUI includes a desktop environment, which provides a desktop workspace and a set of applications such as a file manager, web browser, and text editor. It also includes a display manager, which is responsible for managing the login and logout process. CentOS GUI is designed to be easy to use and provide a familiar interface for users who are accustomed to using other popular desktop operating systems such as Windows and macOS.

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Centos

How to Change Hostname on Centos

Posted on December 19, 2022February 19, 2023 By oarsman No Comments on How to Change Hostname on Centos

CentOS Hostnames

A CentOS hostname is a unique name that identifies a CentOS system on a network. It is used to identify the system when connecting to it over the network, and it is also used to identify the system in log files and other diagnostic information.

There are a few different types of hostnames that can be used on a CentOS system. The most common type is a simple hostname, which consists of a single word or phrase. For example, “server1” or “web-server” are both valid simple hostnames.

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Centos, Linux

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