https://www.youngju.dev/blog 천천히 올바르게. AI Researcher & DevOps Engineer Youngju's tech blog. GPU/CUDA, LLM, MLOps, Kubernetes AI workloads, distributed training, and data engineering. ko fjvbn2003@gmail.com (Youngju Kim) fjvbn2003@gmail.com (Youngju Kim) Sat, 16 May 2026 00:00:00 GMT https://www.youngju.dev/blog/culture/2026-05-16-modern-bash-shell-scripting-2026-bash-5-2-zsh-5-9-fish-4-nushell-shellcheck-bashly-justfile-deep-dive.en https://www.youngju.dev/blog/culture/2026-05-16-modern-bash-shell-scripting-2026-bash-5-2-zsh-5-9-fish-4-nushell-shellcheck-bashly-justfile-deep-dive.en 37 years after Brian Fox first released Bash in 1989, in 2026 the shell is no longer just a command-input line — it sits at the center of operations infrastructure. Bash 5.2 is still the global standard. Zsh 5.9 is the default on macOS and rules the Oh My Zsh ecosystem. fish 4 has been rewritten in Rust and sets a new bar for user-friendliness. Nushell rewrites the very definition of a shell with structured-data pipelines. On top of those, ShellCheck, shfmt, bashly, gum, fzf, ripgrep, fd, eza, just, mise, and Starship complete what "modern shell scripting" means today. This deep dive walks through 22 chapters of shells, scripting best practices, modern CLI tooling, AI shell integrations, Korean/Japanese ops culture, and the road ahead. Sat, 16 May 2026 00:00:00 GMT fjvbn2003@gmail.com (Youngju Kim) bashzshfishnushellshellcheckbashlyjustfileshell-scriptingunix2026deep-diveenglish https://www.youngju.dev/blog/culture/2026-05-16-modern-bash-shell-scripting-2026-bash-5-2-zsh-5-9-fish-4-nushell-shellcheck-bashly-justfile-deep-dive.ja https://www.youngju.dev/blog/culture/2026-05-16-modern-bash-shell-scripting-2026-bash-5-2-zsh-5-9-fish-4-nushell-shellcheck-bashly-justfile-deep-dive.ja 1989 年に Brian Fox が最初の Bash を公開してから 37 年が経った 2026 年、シェルはもはや単なるコマンド入力行ではなく、運用インフラの中核に位置する。Bash 5.2 が依然としてグローバルスタンダードであり、Zsh 5.9 が Oh My Zsh エコシステムを擁しつつ macOS の既定で、fish 4 が Rust で書き直されてユーザーフレンドリーの新基準を作り、Nushell が構造化データパイプラインでシェルの定義そのものを書き換える。その上に ShellCheck、shfmt、bashly、gum、fzf、ripgrep、fd、eza、just、mise、Starship といったツールが「モダンシェルスクリプティング」を完成させる。本稿は 22 章にわたって、シェル本体、スクリプトのベストプラクティス、モダン CLI ツール、AI シェル統合、日韓運用チームの事例までを一気にまとめた深掘りガイドである。 Sat, 16 May 2026 00:00:00 GMT fjvbn2003@gmail.com (Youngju Kim) bashzshfishnushellshellcheckbashlyjustfileshell-scriptingunix2026deep-dive日本語 https://www.youngju.dev/blog/culture/2026-05-16-modern-bash-shell-scripting-2026-bash-5-2-zsh-5-9-fish-4-nushell-shellcheck-bashly-justfile-deep-dive https://www.youngju.dev/blog/culture/2026-05-16-modern-bash-shell-scripting-2026-bash-5-2-zsh-5-9-fish-4-nushell-shellcheck-bashly-justfile-deep-dive 1989년 Brian Fox가 처음 Bash를 발표한 지 37년이 지난 2026년, 셸은 단순한 명령 입력 줄이 아니라 운영의 한가운데에 자리잡은 인프라다. Bash 5.2가 여전히 글로벌 표준이고, Zsh 5.9가 Oh My Zsh 생태계를 거느린 채 macOS의 기본이며, fish 4가 Rust로 재작성되어 사용자 친화의 새 기준을 만들고, Nushell이 구조화된 데이터 파이프라인으로 셸의 정의를 다시 쓴다. 그 위에는 ShellCheck, shfmt, bashly, gum, fzf, ripgrep, fd, eza, just, mise, Starship 같은 도구들이 “모던 셸 스크립팅”을 완성한다. 이 글은 22개 챕터에 걸쳐 셸 자체, 스크립트 베스트 프랙티스, 모던 CLI 도구, AI 셸 통합, 한일 운영팀 사례까지 통째로 정리한 심층 가이드다. Sat, 16 May 2026 00:00:00 GMT fjvbn2003@gmail.com (Youngju Kim) bashzshfishnushellshellcheckbashlyjustfileshell-scriptingunix2026deep-dive https://www.youngju.dev/blog/culture/2026-05-16-vs-code-essential-extensions-2026-gitlens-error-lens-pretty-typescript-errors-tailwind-prisma-biome-deep-dive.en https://www.youngju.dev/blog/culture/2026-05-16-vs-code-essential-extensions-2026-gitlens-error-lens-pretty-typescript-errors-tailwind-prisma-biome-deep-dive.en A single-volume guide to the 2026 VS Code extension market. Covers GitLens (GitKraken) as the Git standard, the inline-error UX revolution from Error Lens and Pretty TypeScript Errors, the icon-theme rivalry between vscode-icons and Material Icon Theme, small helpers like Indent Rainbow and Dependi, Vim/Neovim modes, the fragmented AI market with Tabnine/Codeium/Cody/GitHub Copilot/Continue/Cline, framework-aware tools like Tailwind CSS IntelliSense and Prisma, the linter+formatter split among ESLint/Prettier/Biome, plus Even Better TOML, Markdown All in One, Live Server, REST Client, ThunderClient, ShellCheck, EditorConfig, Polacode, Quokka.js, Code Tour, Project Manager, and GitHub Pull Requests. Closes with Toss/Kakao/Mercari/ZOZO case notes and a per-role decision guide for newcomers, TypeScript devs, Rust developers, and full-stack engineers. Sat, 16 May 2026 00:00:00 GMT fjvbn2003@gmail.com (Youngju Kim) vscodevscode-extensionsgitlenspath-intellisenseerror-lenspretty-typescript-errorsvscode-iconsmaterial-icon-themeindent-rainbowdependitailwind-intellisenseprismaeslintprettierbiomeeven-better-tomllive-serverrest-clientthunderclientshellcheckeditorconfigpolacodequokka-jscode-tourproject-managergithub-pull-requests2026deep-diveenglish https://www.youngju.dev/blog/culture/2026-05-16-vs-code-essential-extensions-2026-gitlens-error-lens-pretty-typescript-errors-tailwind-prisma-biome-deep-dive.ja https://www.youngju.dev/blog/culture/2026-05-16-vs-code-essential-extensions-2026-gitlens-error-lens-pretty-typescript-errors-tailwind-prisma-biome-deep-dive.ja 2026年のVS Code拡張機能市場を一冊にまとめる。GitLens(GitKraken)が築いたGit表示の標準、Error LensとPretty TypeScript Errorsが起こしたインラインエラーUXの革命、vscode-iconsとMaterial Icon Themeのアイコン争い、Indent RainbowやDependiのような小さなヘルパー、Vim/Neovimモード、Tabnine/Codeium/Cody/GitHub Copilot/Continue/Clineに分かれたAI拡張機能市場、Tailwind CSS IntelliSenseとPrismaのフレームワーク密着型、ESLint/Prettier/Biomeの linter+formatter 分業、さらにEven Better TOML/Markdown All in One/Live Server/REST Client/ThunderClient/ShellCheck/EditorConfig/Polacode/Quokka.js/Code Tour/Project Manager/GitHub Pull Requestsまで。Toss/カカオ/メルカリ/ZOZOの事例を踏まえ、新規開発者/TypeScript/Rust/フルスタック別の意思決定ガイドで締めくくる。 Sat, 16 May 2026 00:00:00 GMT fjvbn2003@gmail.com (Youngju Kim) vscodevscode-extensionsgitlenspath-intellisenseerror-lenspretty-typescript-errorsvscode-iconsmaterial-icon-themeindent-rainbowdependitailwind-intellisenseprismaeslintprettierbiomeeven-better-tomllive-serverrest-clientthunderclientshellcheckeditorconfigpolacodequokka-jscode-tourproject-managergithub-pull-requests2026deep-dive日本語 https://www.youngju.dev/blog/culture/2026-05-16-vs-code-essential-extensions-2026-gitlens-error-lens-pretty-typescript-errors-tailwind-prisma-biome-deep-dive https://www.youngju.dev/blog/culture/2026-05-16-vs-code-essential-extensions-2026-gitlens-error-lens-pretty-typescript-errors-tailwind-prisma-biome-deep-dive 2026년 VS Code 익스텐션 시장을 한 권으로 정리한다. GitLens(GitKraken)로 대표되는 Git 표준, Error Lens와 Pretty TypeScript Errors가 만든 에러 UX 혁명, vscode-icons와 Material Icon Theme의 아이콘 경쟁, Indent Rainbow와 Dependi 같은 작은 보조 도구, Vim/Neovim 모드, Tabnine/Codeium/Cody/GitHub Copilot/Continue/Cline로 분열된 AI 익스텐션 시장, Tailwind CSS IntelliSense와 Prisma의 프레임워크 친화 도구, ESLint/Prettier/Biome의 linter+formatter 분화, Even Better TOML/Markdown All in One/Live Server/REST Client/ThunderClient/ShellCheck/EditorConfig/Polacode/Quokka.js/Code Tour/Project Manager/GitHub Pull Requests까지 — 토스/카카오/메르카리/ZOZO 사례를 거쳐 신규 개발자/타입스크립트/Rust/풀스택별 의사결정 가이드로 마무리한다. Sat, 16 May 2026 00:00:00 GMT fjvbn2003@gmail.com (Youngju Kim) vscodevscode-extensionsgitlenspath-intellisenseerror-lenspretty-typescript-errorsvscode-iconsmaterial-icon-themeindent-rainbowdependitailwind-intellisenseprismaeslintprettierbiomeeven-better-tomllive-serverrest-clientthunderclientshellcheckeditorconfigpolacodequokka-jscode-tourproject-managergithub-pull-requests2026deep-dive