What is firewalld? How to configure firewalld in Centos
admin
Firewalld is utility that allow us to manage firewall rules. It is is the default firewall on Centos. Install and starting firewalld. Some CentOS systems may not have firewalld. To…
Linux
Reset Root Superuser Password in Centos 7 or 8
Sometimes it happens that system administrators forget the superuser password or, for example, a server which there is no information. In these cases, we need to figure out what kind…
How to use systemctl and systemd in linux
With the systemd subsystem came the systemctl command. It allows you to manage the main Linux processes. It is cheat sheet of the most used commands. General Syntax Without options,…