Disabling a specific repository while installing a package in Linux can be useful in various scenarios, such as avoiding packages from an untrusted or broken repository. The exact method depends on the package manager you are using. Here are methods for some of the most common package managers: APT (Debian, Ubuntu, and derivatives): Temporarily Disable …

To install a package from a specific repository in Linux, you typically use the package management system that comes with your distribution. The exact method can vary depending on the distribution (e.g., Ubuntu, Fedora, CentOS) and the package manager (e.g., apt, yum, dnf). Below are methods we have verified for some common distributions: For Debian/Ubuntu …

High CPU usage by certain processes can lead to system slowdowns, unresponsiveness, and in some cases, complete halts, making it essential for system administrators and power users to quickly identify and manage such processes. This article aims to provide readers with practical and easy-to-follow methods to pinpoint the processes that are utilizing the most CPU …

To list all the groups in a Linux system, various commands can be used based on the specific information required. Here are some common methods: Using the cat Command on /etc/group The /etc/group file in a Linux system contains information about groups and group memberships This plain text file contains one entry per line, each …

Managing user permissions and access rights is a fundamental aspect of system administration in Linux. In a multi-user environment, users are often assigned to groups to streamline the management of permissions. Groups in Linux are a powerful way to manage and control access to files, directories, and other system resources. However, there are instances where …

Adding a user to multiple groups in Linux can be done using the usermod command. Here’s a step-by-step guide: using usermod Command to add a user to Multiple Groups To add a user to multiple groups, use the -G option followed by a comma-separated list of the groups: sudo usermod -G group1,group2,group3 username Replace group1,group2,group3 …

You can utilize systemd-logind configurations or set up a custom script to terminate idle sessions. Here are the two methods. We have verified on RHEL Linux. Using systemd-logind (For Systems with systemd) Edit logind.conf: Open the /etc/systemd/logind.conf file in a text editor. You’ll need administrative privileges to edit this file. sudo vi /etc/systemd/logind.conf Configure StopIdleSessionSec: …

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The error message “SSL: SSLV3_ALERT_CERTIFICATE_EXPIRED” indicates that the server you’re trying to connect to has an expired SSL certificate. This can cause issues when accessing websites, using APIs, or connecting to any secure service that relies on SSL/TLS for encryption. Here’s a detailed guide on how to fix this error, step-by-step: Verify the Certificate Expiry …

In Linux, you can manipulate strings using various commands and tools. To subtract or extract parts of a string, you might use tools like cut, awk, or string manipulation in scripting languages like Bash or Python. Extract Characters or Substrings in Linux Let’s say you have a string “Hello World” and want to extract the …