The no-removal rule behind apt upgrade, the apt-get version that installs nothing new, why full-upgrade and dist-upgrade are one command with two spellings, and the exact two-step order Debian's release notes prescribe for release upgrades.
RudderStack open-sourced DevBox, the MIT-licensed autonomous engineering harness its own engineers have fed tickets since April 2026. How the per-task sandbox, the egress proxy, the staged agent pipeline, and the versioned memory work, what the self-reported numbers actually measure, and what v1 does not do.
git diff reads lines. OmniDiff (structural plus content-aware diffing, AGPLv3), difftastic (structural, MIT), and delta (a syntax-highlighting pager) answer three different questions about reading changes. A documentation-based comparison with the published metrics, the admitted accuracy gaps, and which tool belongs where.
Four built-in OpenSSH features that remove re-typed keys, manual bastion hops, repeated 2FA prompts, and config sprawl: ProxyJump, ControlMaster, per-host Host blocks, and Include files, with the ordering rules and failure modes the man pages assume you already know.
One year after swapping grep, find, cat, ls, and cd for ripgrep, fd, bat, eza, zoxide, and delta: which replacements became permanent dotfiles fixtures, which aliases quietly died, and the one seam (outcome changes vs presentation changes) that separated the keepers from the drops.
Ctrl-R advanced from a reverse grep into a real database: indexed, ranked, and, with Atuin, synced end-to-end encrypted across machines. Comparing Atuin, McFly, and fzf-based history search on what they record, where the data lands, and what happens to secrets captured along the way.
mise wraps dev tool versions, environment variables, and project tasks in one Rust CLI driven by a single committed mise.toml. A look at how it differs from the classic alternatives (nvm, pyenv, rbenv, asdf, direnv, Homebrew), what the old tools still do well, and how to migrate without breaking teammates.