[CentOS] Testing software on CentOS 7

On 3/18/19 6:05 PM, H wrote:
> Thank you, visited that page and tried the above but get the following messages:
>
> No protocol specified
> Geany: cannot open display


Can you copy the text of the command you ran and its output from your 
terminal, and paste that in a reply email?

Also, run the command a second time, but add "echo -- " at the beginning 
so you can see how variables are expanded.  Include that command and 
output in your reply.