6 ways to troubleshoot ssh: connect to host port 22: Connection timed out

A connection timeout means that the client attempted to establish a network socket to the SSH server, but the server failed to respond within the timeout period. ssh: connect to host port 22: Connection timed out In PuTTY, you might see an error window with text like this: Network error: Connection timed out In […]

4 ways to list files within a rpm package in Linux

If you’re working with an RPM-based Linux distribution, you may need to list the files that are contained within an RPM package. This can be useful for a variety of reasons, such as troubleshooting or understanding what changes an installation made to your system. In this post, we’ll explore a few different methods for listing […]

How to use Linux systemctl command

systemctl is a command-line utility in Linux operating systems that is used to control and manage the system’s services, daemons, and other processes. It is an essential tool for system administrators and developers as it allows them to monitor and control various system processes. Viewing systemd information In systemctl, a “unit” is a systemd object […]

3 ways to check FIPS mode in Linux

FIPS is an acronym that stands for Federal Information Processing Standards. It is a set of standards and guidelines developed by the United States federal government to establish uniform requirements for information security, including computer security, data protection, and cryptography. What is FIPS? FIPS publications are used by federal agencies and organizations that handle sensitive […]

2 ways to check selinux status in Linux

Security-Enhanced Linux (SELinux) is a security architecture for Linux systems that allows administrators to have more control over who can access the system. It was originally developed by the United States National Security Agency (NSA) as a series of patches to the Linux kernel using Linux Security Modules (LSM). Security Enhanced Linux (SELinux) provides an […]

Understanding /etc/resolv.conf file in Linux

The /etc/resolv.conf file is a configuration file used by the Linux operating system to store information about Domain Name System (DNS) servers. This file contains a list of DNS server addresses, as well as other options that control how DNS resolution works on your system. In this blog post, we will discuss the contents of […]

How to list repository in Linux

In Linux, a repository is a collection of software packages that are available for installation on your system. Think of it as an app store for Linux systems. Repositories make it easier to find, install and update applications, without having to manually compile the source code. In this article, we’ll explain how to list the […]

How to Find Your IP Address in Ubuntu Linux

If you’re having trouble connecting to the internet or other devices on the network, checking your IP address can help you determine if the issue is related to your network configuration. The ip addr command is used to display information about network interfaces and their associated IP addresses on a Ubuntu system. In this article, […]

2 ways to use Linux ip addr command

Are you tired of constantly struggling with network connectivity issues and not being able to identify the root cause? Look no further than the ‘ip addr’ command! This powerful command allows you to view and manipulate your network interfaces, providing crucial information such as IP addresses, netmasks, and broadcast addresses. If you’re unfamiliar with this […]

3 ways to fix ping: cannot resolve Unknown host

“ping: cannot resolve Unknown host” is an error message that typically appears when the ping command is used to try and reach a hostname that cannot be resolved to an IP address. This can happen for a few reasons: The hostname does not exist: The hostname may have been typed incorrectly or the host may […]