Use RSA CA Certificates with OpenSSH 8.2
OpenSSH 8.2 is coming to the latest Long-Term Service release of Ubuntu, Focal Fossa (20.04), and has some breaking changes for users using an SSH Certificate Authority.
How to change email of your Nvidia account
I recently retired a few old email addresses, and am currently going in a row to change email for accounts associated with those emails. Everything else went smoothly, with my Nvidia account being ...
Converting DFA to Regular Expression
This post originated from Lab 1 of course Compilers: Principles that I’m currently taking, in which we were required to write a flex program to parse a subset of the C language. The multiline comme...
Raspberry Pi 4 B Review and Benchmark - What’s improved over Pi 3 B+
Lately I’ve finally received my Raspberry Pi 4 (4 GB model), and I couldn’t resist the temptation to give it a try and see all the improvements that’s been reported for months.
Creating templated Systemd services
Last time I wrote an article about NAT traversal using FRP, which has been my personal solution for exposing SSH access of machines behind NAT to the internet for a long time.
How I saved a lost commit from GitHub
Earlier today I force-pushed to my repository USTC-RV-Chisel for testing purposes, without noticing that my local ref origin/master is 1 commit behind the actual master on GitHub. My friend pushed ...
Build a minimal Linux system and run it in QEMU
Linux is the #1 open-source operating system nowadays, and many people are running a Linux distro, such as Ubuntu or Arch. Linux is also the most popular choice for a server OS.
Filter manually installed packages from APT with AWK
It’s again when I want to find out what packages I have manually installed (or by a script) from the output of apt list, with all output on one line.