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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 }
How to Create Large Files in Linux and macOS 1GB 10GB 100GB 1TB
Linux and macOS commands to create large files in Linux. You can create files of any size, including 1GB, 10GB, 100GB and 1TB files.... continue reading
Linux and macOS commands to create large files in Linux. You can create files of any size, including 1GB, 10GB, 100GB and 1TB files.... continue reading
{ updated: 2025-12-17 13:40:59 }
ACSL Junior Change Digits Problem
My Python solution for the ACSL Junior 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 Junior Division 2003-2004 Contest 1 Problem Change Digits. Includes the problem solving logic and Python code tips.... continue reading
{ updated: 2025-12-03 22:32:48 }
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: 2025-11-26 20:49:06 }
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