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Image of Advanced Programming in the UNIX Environment, Second Edition (Addison-Wesley Professional Computing Series)
Image of Android Wireless Application Development
Image of Modern Operating Systems (3rd Edition)
Image of RHCE Red Hat Certified Engineer Linux Study Guide (Exam RH302) (Certification Press)

Using the D-Bus Interface to Firewalld

This post describes the D-Bus interface to FirewallD and provides a number of working examples which use dbus-send to retrieve information from FirewallD and change the firewall configuration.

RHEL/CentOS 7: Revert To Old Network Interface Naming Convention

RHEL/CentOS 7 uses SystemD predictable network interface names. This post shows you how to rename a network interfcae to eth0,/em>without modifying the kernel commnad line or any udev rules, and without requiring a sytem reboot.

Configure a Host ISO-based Package Repository on a CentOS 7.2 VM

In this post, I show you how to configure a host ISO-based package repository on a CentOS 7.2 VM running on VMware Workstation.

RHCSA Preparation - Script to Configure a Simple OpenLDAP Server

If you are preparing for the RHCSA exam, this post should be of interest to you. I provide a Bash script which will fully configure a simple OpenLDAP directory server which you can then use to test that your OpenLDAP client setup is correct.

My Thoughts on Systemd on RHEL7

This blog post discusses my viewpoint that systemd adds no value when used on an enterprise server such as RHEL7 and, in fact, results in a misuse of scarce corporate or governmental resources for no discernable increase in security or productivity.