ofr-scratchpad

A personal collection of small, unrelated notes and code examples.

— Oliver Frolovs

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Pinned

• 3 of 3, “Concurrency in Go” course notes – LONGREAD and very raw
• 2 of 3, “Functions, Methods, and Interfaces in Go” course notes – LONGREAD
• 1 of 3, “Introduction to Go” course notes – LONGREAD
• AWS new account checklist
• Python app templates

Go

• Compile and install Go packages
• HCL type expressions extension
• Golang Gock HTTP traffic mocking and testing
• Golang raw strings and error wrapping

Git and GitHub

• Tag a release or overwrite an existing tag
• Change default branch name for git init
• Smarter force-pushing in Git
• Reset local branch to remote branch HEAD
• Ignore some settings in all repositories
• A high-level overview of different Git workflows
• How to rebase your current Git branch on master
• How to set up Git to require an e-mail address on per-repo basis
• How to move uncomitted changes between Git repository branches
• How to push a local branch to a different branch name in the remote Git repo
• How to merge unrelated Git histories
• How to embed other repos into yours by using Git submodules

Linux

• How to upgrade a single package only (with apt)
• Useful Linux kernel memory-related settings
• File types in Linux
• Get snapshot of current processes (Linux, ps)
• Print directory tree in Linux
• Cowsay a fortune in colour on login
• Make sudo stop asking for password

Python

• Setting up a productive Python environment
• Output to stderr in Python
• Storing configuration in a class in Python
• How to profile memory usage in Python
• Change file name encoding using Python
• Profiling Python scripts
• Where’s main() function in a Python script?
• Print Python Standard Library exception tree
• Three little gems from the Python’s math module
• How to check what version of Python is running a script

Other shenanigans

• Create a secret using OpenSSL library
• Running Postgres in Docker on WSL2
• The big or otherwise interesting names in Cloud technology
• Adventures in IPv6
• Fira Code font settings for VSCode
• Mains voltage
• Search a keyword in all Go files using grep
• Enable HTTPS in nginx web server using Let’s Encrypt CA
• Windows 10 Driver Store and Core Isolation
• Don’t block an open PDF file for saving and reload on save
• Windows PowerToys
• Trace route on the Internet
• HTML character entities
• Install PrinceXML in WSL Ubuntu Linux
• WSL configuration and host resources limit
• Copying files with complex names using scp
• Handling leap seconds with Network Time Protocol (NTP)
• Run PowerShell scripts unhindered
• Stop using SSL
• No-SSH approach for git and GitHub under Linux
• A billion ways to run code in Windows
• Serve Markdown as HTML with live-reloading
• WSL open Explorer from the current working directory
• Atom tool-bar package iconset location
• Keep SSH session from disconnecting due to inactivity