Useful Linux commands:

Linux command for seeing harddrive I/O in real time:
dstat -tdD total,sda,sdb,sdc,md1 60

SSH to a server and forward back X11 commands:
ssh -X -Y *hostname*

Stop and start Gnome as needed:
service gdm stop
service gdm start

Disable Gnome from auto-start:
systemctl set-default multi-user.target
systemctl isolate multi-user.target

To re-enable:
systemctl isolate graphical.target
systemctl set-default graphical.target #it’ll setup the gdm boot startup
startx

Redhat’s guide to Convert2RHEL

Extra step left out of the Redhat conversion guide – Use this link if the install complains about an SSL CA path

Determining which programs opened ports on Linux