Desktop PC I am using for six years
The PC I am using right now is more than six years. I checked my blog and found the post of flash the bios in Feb 2013. I did a search in my Gmail. Wow, I found the receipt which...
Author: David Yin
Report the bad IP address to the AbuseIPDB
I have a VPS on DigitalOcean. Web server is Nginx web server. I checked the web server log files, including an access log and error log. The error log always gives information about the strange activities from some IP address....
How to check the disk usage of your VPS
The df utility displays the disk space usage on all mounted filesystem. The -T option prints the filesystem type as well. By default, df measures the size in 1K blocks, which could be a little difficult for a desktop user...
How to take a webpage screenshot at terminal window
The scenario is to run the program inside of Ubuntu VPS. Input a URL the program will output the jpg file. The solution is to use wkhtmltoimage, which is a part of wkhtmtopdf. I used to use the old version...
Use GoAccess to Generate Report with Multiple Nginx Log Files
I have a VPS with Nginx as a web server and also a lot of web sites on it. It is on Digital Ocean. Here is the VPS basic information. SFO2 1GB Nanode Ubuntu Linux 18.04.2 Intel(R) Xeon(R) CPU E5-2650...
How to make a slow motion video with Yi Action Camera
I have a Yi Action Camera. It is a low-end GoPro alternative. Ambarella A7LS chipset, low-power digital signal processing (DSP) technology, high-definition (HD) H.264/ MJPEG video engine and a 700-MHz ARM11 applications processor. Sony IMX206, 1/2.3″, 16MP CMOS image sensor...
MDR-ZX110 Sony Over-Ear Headphones
I bought a Sony headphone in LondonDrugs a month ago. I use it with my Xbox One console. I like the over-ear headphone. My ears feel more comfortable. Less pressure and I can also hear the environment sound. Look at...
Fix the warning of Event 1534 on Windows 10 build 1809
It is Windows 10 build 1809. In the Event Viewer, there are a lot of warning of event 1534. The description of warning is either: Profile notification of event Unload for component {B31118B2-1F49-48E5-B6F5-BC21CAEC56FB} failed, error code is See Tracelogging for...
Fix the Warning of Event 64, CertificateServicesClient-AutoEnrollment
My Windows 10 is 1809. Recently I saw the warning in the Event Viewer. Event 64, CertificateServicesClient-AutoEnrollment Certificate for local system with Thumbprint be f9 b4 cd 1xxxxxxxx f4 df 51 is about to expire or already expired. I did...
Renew the SSL Certificate for Yinfor.com
I just renewed the SSL certificate. The cheapest DV SSL certificate I found is from GoGetSSL.com. I paid by paypal. The price is so good. US$7.90 for two years. Comodo PositiveSSL. After I installed the certificate on my blog. I...
What Is Electromagnetic Compatibility?
Electromagnetic compatibility is an important aspect of global product safety testing. Electronic devices that give off radiation play increasingly vital roles in the lives of people around the world. Electromagnetic compatibility testing ensures that such devices can withstand the emission...
PHP Benchmark of php 7.1, php7.2, php7.3 and even php5.6
Here I run the PHP benchmark script on my Virtualbox guest OS Ubuntu 16.04. Every version of PHP I tested 7 times. So get rid of the highest one, and the lowest one. Get the average of the rest five...
How to pass the Real IP Address of client to Nginx Server
I use a Nginx as the reverse proxy. Here is the scenario. The original server is Server A. The reverse proxy is Server B. Web users are browser the website through Server B. The web log of Server A just...
How to use GeoIP database to block a country in Nginx
First I need to make sure my Nginx has the geoip module. Check it by entering the command below. My Nginx shown the results as below. I found –with-http_geoip_module=dynamic It is cool, I have the geoip module with my Nginx...
A Guide to Online Payment Casino Options
Every casino online offers different modes of payment. Players have the liberty to choose the way in which they would like to deposit and withdraw money from their user accounts. The advantages and disadvantages of every payment method are unique...