One of the commonest errors CentOS users encounter when using YUM package manager (for example running yum update command), especially on a freshly installed system is the “Cannot find a valid baseurl for repo:
Sometimes, while trying to connect to remote systems via SSH, you may encounter the error “Received disconnect from x.x.x.x port 22:2: Too many authentication failures”. In this short article, I will explain how to
In Linux, the passwd command is used to set or change user account passwords, while using this command sometimes users may encountered the error: “passwd: Authentication token manipulation error” as shown in below example.
firewall-cmd is a command line front-end for firewalld (firewalld daemon), a dynamic firewall management tool with D-Bus interface. It supports both IPv4 and IPv6; it also supports networks firewall zones, bridges and ipsets. It