Arul's Blog Posts
aquarium artificial intelligence code cryptocurrency diy education general outdoor raspberry pi restaurants reviews science tech travel
How to Sort a List of Tuples in Python
Tutorial on how to sort a list of tuples in Python in different ways, by field, ascending or descending order.... continue reading
Tutorial on how to sort a list of tuples in Python in different ways, by field, ascending or descending order.... continue reading
{ updated: 2026-01-23 14:42:38 }
Python Syntax Warning "\d" is an invalid escape sequence
If you get the syntax warning "\d" is an invalid escape sequence, this blog post contains the working solution.... continue reading
If you get the syntax warning "\d" is an invalid escape sequence, this blog post contains the working solution.... continue reading
{ updated: 2026-01-23 14:40:31 }
How to Get Rid of the Blinking Drum Light After Toner Replacement
Blog post on on how to get rid of the flashing drum light after replacing toner on my Brother HL 2240 laser printer.... continue reading
Blog post on on how to get rid of the flashing drum light after replacing toner on my Brother HL 2240 laser printer.... continue reading
{ updated: 2026-01-19 20:10:48 }
How to Find SSL/TLS Certificate Expiration Date for Multiple Websites
Tutorial on how to use openssl command to find the expiration dates for SSL TLS certificates for multiple domains in a text file.... continue reading
Tutorial on how to use openssl command to find the expiration dates for SSL TLS certificates for multiple domains in a text file.... continue reading
{ updated: 2026-01-14 21:56:06 }
How to Find SSLLabs Rating of a Website From the Terminal
Tutorial on how to find the SSL Labs rating of a website from the command line using curl.... continue reading
Tutorial on how to find the SSL Labs rating of a website from the command line using curl.... continue reading
{ updated: 2026-01-14 16:54:24 }
How to View Certificate Chain of SSL/TLS Certificates using OpenSSL
Tutorial on how to use openssl command to view all certificate in certificate chain of SSL and TLS certificates.... continue reading
Tutorial on how to use openssl command to view all certificate in certificate chain of SSL and TLS certificates.... continue reading
{ updated: 2026-01-09 05:36:17 }
ACSL Senior Change Digits Problem
My Python solution for the ACSL Senior Division 2003-2004 Contest 1 Problem Change Digits. Includes the problem solving logic and Python code tips.... continue reading
My Python solution for the ACSL Senior Division 2003-2004 Contest 1 Problem Change Digits. Includes the problem solving logic and Python code tips.... continue reading
{ updated: 2026-01-01 05:08:38 }
How to find IP addresses from a hostname
This blog post shows how to get the IP addresses associated to a domain name using Linux or Unix.... continue reading
This blog post shows how to get the IP addresses associated to a domain name using Linux or Unix.... continue reading
{ updated: 2025-12-29 17:06:03 }
ACSL Bit-String Flicking and Bitwise Operations
Bit-string flicking in ACSL is the performing of bitwise operations on binary numbers. NOT, AND, OR, XOR, LSHIFT, RSHIFT, LCIRC, RCIRC.... continue reading
Bit-string flicking in ACSL is the performing of bitwise operations on binary numbers. NOT, AND, OR, XOR, LSHIFT, RSHIFT, LCIRC, RCIRC.... continue reading
{ updated: 2025-12-19 13:54:00 }
How to Send Plain Text Responses in Nginx
Tutorial on how to send plaintext text/plain responses in Nginx without having to render a text file... continue reading
Tutorial on how to send plaintext text/plain responses in Nginx without having to render a text file... continue reading
{ updated: 2025-12-17 15:10:01 }
Page #1