Don't guess why your Docker image is large — use docker image history and dive to see exactly where the weight is. Fix what's actually broken. A real 1.25GB → 139MB walkthrough.
sslh is a protocol multiplexer that lets SSH, HTTPS, and OpenVPN share a single port. The most common use case: hide SSH on port 443 to get through firewalls that only allow HTTP/HTTPS.
reverse_ssh flips SSH: target machines connect back to your server, and you connect to them with standard SSH syntax. HTTP/WebSocket/TLS transports punch through firewalls. SCP, SFTP, and port forwarding all work.
yazi is an async Rust terminal file manager with vim keybindings, image preview, Lua plugins, and fzf/zoxide integration. Alacritty has no native image protocol — macOS uses Chafa, Linux uses Überzug++ with X11/Wayland.
reptyr uses ptrace to re-attach a running process to a new terminal. Started a long job over SSH without tmux? reptyr moves the process into tmux so you can disconnect safely.
NULL behavior varies across databases and causes two common problems: JOIN on NULL columns returns no rows, and UNIQUE constraints allow multiple NULLs. Covers MySQL, PostgreSQL, SQLite, SQL Server with solutions for each.
ky handles per-request retry, timeout, and auth hooks. p-limit caps simultaneous requests. Two tools, two responsibilities — batch-fetching 100 endpoints without hitting 429 or losing data to network hiccups.
Promise.all with 100 requests fires them all at once — servers respond with 429 or fall over. Use p-limit with fetch to cap the number of simultaneous requests. One line of setup, no custom semaphore required.
auto-venv is a Fish shell plugin that automatically activates and deactivates Python venvs on directory change. Supports .venv, venv, .env, env naming, uses git root for scope, and works with z, zoxide, and any other navigation tool.
Use fish shell aliases and functions to make php, composer, and phpunit automatically follow Laravel Valet PHP versions. Handles legacy projects requiring Composer v1 with smart composer.phar detection.
