CentOS 7 “Could not retrieve mirrorlist” Fix – Solution for continued support after EOL

Symptoms: CentOS 7 system wont update or install programs via YUM commands YUM install, YUM update, YUM upgrade result in errors. Environment: Cause: Since 1 July 2024 Centos 7 has reached EOL (end of life) i.e. mirrorlist.centos.org doesn’t exist anymore. Solution: To resolve the issue you need to update all .repo files: This allows the system...

Linux File & Folder Permissions

In Linux, file and directory permissions are essential for controlling access to resources. They are represented by a series of letters and symbols that denote who can read, write, or execute a file or directory. Here’s a basic overview of Linux permissions: Understanding and managing permissions is crucial for maintaining security and control over...