A collection of system administration hints and tips, tricks and articles for the Linux operating system in all its variants.

Latest posts

Clearing GPG BADSIG errors during update

During a test build of Ubuntu 15.10 I suddenly received the following error when refreshing the packages from the repository.

What are access control lists (ACLs)?

Access control lists (ACLs) allow you to assign permissions to many different users and groups on individual files or directories.

Mounting DFS on Oracle Linux

A short article on how to mount a DFS (distributed file system) on an Oracle Linux 5.11 system.

systemd replaces upstart and init

Unlike Upstart in Oracle Linux 6, the systemd daemon now replaces Upstart in managing system run levels and services.

openSUSE Quick Reference Guide

This article provides a quick reference guide for the open SuSE operating system

Tomcat 7 on CentOS 7

This post provides a basic installation and configuration of Tomcat 7 on a CentOS 7 server.