Cups and Raspberry Pi – How to setup your print server

Print Server is one of those things that makes life easier.  I hooked up my Raspberry Pi and a Docker image in order to have a CUPS server and the Bonjour configuration. Login to the Raspberry Pi and switch to root (sudo -s or sudo su –) Check lsusb to see if you can see […]


Fast commands for enabling firewalld on RHEL7 and CENTOS7. I had to enable these for a secondary control on a project I am on. Check the Status of the Firewall on Each Machine and confirm firewalld is started. systemctl status firewalld ‚óŹ firewalld.service – firewalld – dynamic firewall daemon    Loaded: loaded (/usr/lib/systemd/system/firewalld.service; enabled; vendor […]

VirtualBox Additions missing

If you see Kernel Headers not found for target kernel level when installing the “Please install them and execute”. This issue was found on centos. You’ll see the commands below: yum install “kernel-devel-uname-r ==$(uname -r)” References