Webcon 2021 – Web Performance Workshop Summary
On April 7, 2021 I presented a workshop with a coworker Jason Rambeck (Pixo) about Web Performance https://webcon.illinois.edu/sessions/performance-testing/ https://webcon-performance.pixotech.com Summary Desktop internet speeds are rapidly increasing, and the time to load a page is slowly decreasing around 5 seconds Mobile internet [...]
Jenkins SSH Errors and How to Fix Them
Dealing with Jenkin’s SSH issues is definitely not enjoyable to troubleshoot. It’s a curse of Jenkins plugin architecture, connecting with SSH requires multiple SSH plugins to work together and to Jenkins, it just reports an error somewhere down in the plugin layer. The good news, is once you get through this issue, [...]
Setting Ubuntu SSH/CLI Prompt to have a user friendly server name
This is something I change on all new servers I setup, by default a lot of servers use their hostname as its IP, and if you are on a local static network, that might be meaningful to you. But if you get random IPs from cloud hosting like AWS, it isn’t too helpful. When I have multiple SSH terminals open, I want to make it clear [...]
Vizio XRT136 IR Remote Codes
Vizio Remote XRT136 used on most Vizio Smart TVs. UserCode: 04FB Not that the codes are mirrors 0x08, then inverted, 0xF7 thus added are 0xFF Power : 0x08F7 = 8 Volume Up : 0x02FD = 2Volume Down : 0x03FC = 3 Mute : 0x09F6 = 9 Home : 0x2DD2 = 45Exit : 0x39B6 = 57Info : 0x1B34 = 27Back : 0x4AB5 = 74Menu : 0x4FB0 = 79Pic : 0x6798 = [...]
Installing Ubuntu Linux on a PCIe NVMe drive
During my installation of Ubuntu 19.10 to a PCIe NVMe drive, you might run into a problem as soon as it starts copying data with an error like this: Current device storage tree: Shutdown Plan: Error: Could not stat device /dev/disk/by-id/wwn-eui.0100000000000000 Waiting on device path: /dev/disk/by-id/wwn-eui.0100000000000000 An error [...]
UTC Conversion to United States Timezones
Setting CRON jobs on servers can be painful to wrap your head around the shift of UTC to your timezone. Especially thanks to daylight savings times where a UTC-6 becomes a UTC-5 for a few months of the year. CST ⇒ Central Standard TimeCDT ⇒ Central Daylight Time 2018 daylight savings start March 11, 2018 2AM to Nov 4, 20182019 daylight [...]