by ray | Jul 7, 2018 | Linux / Ubuntu
netstat -tulnap shows me what ports are in use. How do I free up a port in Linux? As the others have said, you’ll have to kill all processes that are listening on that port. The easiest way to do that would be to use the fuser(1) command. For example, to...
by ray | Jul 7, 2018 | AWS
I have an AMI and security group that I’ve been starting instances from, using our VPC and a subnet we’ve had defined, for a long time. Once such instances start, I’m able to SSH to them.So far so good.Lately we started getting error messages about...
by ray | Jul 7, 2018 | Microsoft Windows
Maybe this has happened to you. You went to copy a quote from a press release and, suddenly, this is what you saw… I couldn’t figure out what the hell had happened, but my screen was suddenly gray. It was at the correct resolution, and everything looked the same...
by ray | Jul 7, 2018 | Linux / Ubuntu
How can I flush the DNS on Ubuntu 17.04? You may use this command: sudo systemd-resolve –flush-caches To verify that flush was sucessfull, use: sudo systemd-resolve –statistics
by ray | Jul 6, 2018 | Security, NGINX
Introduction Your web site address starts with http://The site contains interactive elements, such as payment buttons, or text forms etc.For the visitor, the site is flagged by the browser as ‘insecure’. You need to convert the site to https://This requires that you...
