Linux

A quick fix for the DRBD error “not defined in your config (for this host)”, typically caused by a hostname mismatch in your …

CentOS PostgreSQL Installation tutorial CentOS PostgreSQL centos postgresql : PostgreSQL is a powerful, open source object-relational …

Overview A guide to using Access Control Lists (ACL) on Linux to manage fine-grained file and directory permissions beyond the standard …

Overview How to use netcat (nc) to test firewall rules by setting up a listener on one side and connecting from the other, verifying that …

Overview Linux chmod has a few options that can make your life a lot easier when managing a shared storage. The most needed are chmod suid …

Overview xrdp is a free open-source remote desktop server for Linux. Installing xrdp on CentOS might be a little tricky since CentOS …

centos luajit installation instructions centos luajit centos luajit installation instructions - In the following tutorial I will show you …

dd-wrt set date manually dd-wrt set date manually - In this tutorial I’ll explain how to set the date and time in dd-wrt based …

CentOS G-WAN Server How to install and configure the G-WAN web server on CentOS, including service mode setup and support for multiple …

Overview Essential iptables configuration examples for CentOS, including setting up default chain policies, stateful rules, and common …

How to fix the “SSL handshake failed: Key usage violation in certificate has been detected” error on CentOS, commonly caused by …

Overview tr and sed are very powerful stream and character manipulation commands, Each has its own advantage with string manipulation.

CentOS RPMForge Installation Instructions (for Centos 6.x) A quick guide to adding the RPMForge (RepoForge) third-party repository to your …

Overview Linux fg bg commands usage and examples using CTRL-Z and jobs command. Move a process between background and foreground modes with …

A quick guide to copying your SSH public key to a remote server using ssh-copy-id or scp.