Command Line (50)

• buildah.io (buildah.io) tool
  Daemonless OCI image building without a full container engine; containers org project, release news
  Container Container Runtime #
• What is Kopia? (kopia.io) reference
  Encrypted, deduplicated, compressed snapshots to cloud, NAS or local repos; CLI and GUI, open source
  Backup Encryption #
• Get started with Deno (Deno) reference
  TypeScript-first JavaScript runtime, sandboxed by default, with built-in formatter, linter and tests
  Application Server Javascript Runtime #
• /bin/bash based TLS/SSL tester: testssl.sh (testssl.sh) tool
  Bash script probing a server's TLS/SSL protocols, ciphers and weaknesses; GPLv2, donation-funded
  Penetration Testing TLS #
• Debian Reference (debian.org) reference
  post-installation overview of the Debian system, covering admin tasks through shell-command examples
  Debian System Administration #
• LinuxCommand.org: Learn The Linux Command Line. Write Shell Scripts. (linuxcommand.org) tutorial
  William Shotts' free shell tutorials plus the full text of The Linux Command Line book
  Shell Scripting #
• The GNU Bourne-Again Shell (tiswww.case.edu) tool
  GNU Bash upstream home: POSIX shell implementation, releases, patches and manual, GPLv3
  Shell Scripting Unix Standard #
• BashPitfalls - Greg's Wiki (mywiki.wooledge.org) reference
  catalogue of common bash mistakes - word splitting, globbing, quoting - each shown with the correct form
  Shell Scripting #
• tldr pages (tldr.sh) tool
  community-written simplified man pages: practical examples per command, clients for every platform, free
  Shell Scripting System Administration #
• Shell Command Language (pubs.opengroup.org) reference
  POSIX.1-2024 normative definition of sh: token recognition, word expansion, redirection, compound commands
  Shell Scripting Unix Standard #
• Unix & Linux Stack Exchange (Unix & Linux Stack Exchange) forum
  Voted question-and-answer board where Unix and Linux users work through admin and shell problems
  Shell Scripting System Administration #
• Julia Evans (Julia Evans) personal-site
  posts and zines on the terminal, man pages, tcpdump and dig, git internals and SQLite
  Hacker Culture Network Diagnostic #
• Linux Essentials Exam 010 Objectives (Linux Professional Institute (LPI)) reference
  objectives and weightings for LPI Linux Essentials exam 010-160, version 1.6 syllabus
  Certification Exam Objective System Administration #
• Introduction to Linux (LFS101) | Linux Foundation Education (Linux Foundation - Education) tutorial
  no-cost self-paced beginner course: CLI basics, graphical config, major distro families
  Free Tier System Administration #
• OverTheWire: Bandit (overthewire.org) tutorial
  beginner shell levels played over SSH, each password hidden on the box; free to play
  Interactive Lab Shell Scripting SSH #
• SQLite In 5 Minutes Or Less (sqlite.org) tutorial
  first steps with the sqlite3 command-line shell and the TCL binding; prebuilt binaries or build yourself
  Relational Database SQL #
• journalctl(1) - Linux manual page (man7.org) reference
  querying and filtering the systemd journal: field matches, boot ranges, output formats
  Init System Logging #
• openssl-ca - OpenSSL Documentation (docs.openssl.org) reference
  openssl ca man page: signing requests, self-signing, CRL generation and revocation, serial and policy options
  PKI TLS #
• Command line tool (kubectl) (Kubernetes) reference
  kubectl syntax, command operations and kubeconfig handling, with cheat sheet and per-command links
  Container Kubernetes #
• Ghostty (Ghostty)
  Native GPU-accelerated terminal emulator, MIT-licensed
  Terminal Emulator #
• tmux Wiki (GitHub)
  tmux terminal multiplexer, ISC-licensed, session persistence
  Terminal Multiplexer #
• GitHub - kovidgoyal/kitty: If you live in the terminal, kitty is made for you! Cross-platform, fast, feature-rich, GPU based. (GitHub) repo
  cross-platform terminal that renders through the GPU, with multiplexing built in
  Terminal Emulator Terminal Multiplexer #
• Alacritty - A cross-platform, OpenGL terminal emulator (alacritty.org) tool
  GPU-rendered and deliberately minimal: vi mode, regex hints, scrollback search; BSD, macOS, Windows too
  Terminal Emulator #
• An overview on Windows Terminal (learn.microsoft.com) reference
  Tabbed GPU-rendered host for CMD, PowerShell and WSL shells; MIT-licensed, Microsoft-maintained
  Terminal Emulator Windows #
• Termux (Termux) tool
  Rootless Android app with an APT package set: bash, OpenSSH, python, rsync and man pages on a phone
  Mobile Shell Package Manager Terminal Emulator #
• Mosh: the mobile shell (Mosh) tool
  UDP-based SSH replacement surviving roaming and sleep, with local echo; GNU/Linux through iOS
  Mobile Shell SSH #
• Linux man pages online (man7.org) reference
  HTML renderings of the man-pages project plus curated pages from other free software projects
  Kernel Unix Standard #
• The Linux Documentation Project (tldp.org) reference
  Ageing archive of HOWTOs, book-length guides, FAQs, man pages and Linux Gazette, with translations
  Hacker Culture #
• The Missing Semester of Your CS Education (Missing Semester) tutorial
  MIT lecture series on shell, editors, git, debugging and profiling that degree courses skip
  Shell Scripting Version Control #
• BashGuide - Greg's Wiki (mywiki.wooledge.org) tutorial
  Beginner bash walkthrough stressing good practice and quoting pitfalls; assumes no prior Unix skill
  Shell Scripting #
• ShellCheck – shell script analysis tool (shellcheck.net) tool
  Catches quoting, portability and logic bugs in bash/sh; paste a script into the browser or run it locally
  Code Quality Shell Scripting #
• restic · Backups done right! (restic.net) tool
  Single-binary deduplicating backup to local, SFTP or cloud storage, encrypted and restore-verifiable
  Backup Encryption #
• BorgBackup – Deduplicating archiver with compression and authenticated encryption (borgbackup.org) tool
  Content-defined chunking, FUSE-mountable archives, untrusted remote repos; BSD-licensed, Linux/macOS/BSD
  Backup Encryption #
• Rclone (Rclone) tool
  rsync-style copy, sync and mount across 70+ cloud storage backends, with checksums and --dry-run
  Backup File Synchronization File Transfer #
• GitHub - aristocratos/btop: A monitor of resources (GitHub) repo
  C++ rewrite of bashtop/bpytop with mouse support, themes and GPU stats; Linux, macOS and BSD
  Performance Analysis #
• The Logfile Navigator (The Logfile Navigator) tool
  auto-detects log formats, unpacks compressed files and queries them through SQLite; no server or setup
  Logging Text Processing #
• GitHub - junegunn/fzf: :cherry_blossom: A command-line fuzzy finder (GitHub) repo
  Single binary with Bash, Zsh, Fish and Vim bindings; also a toolkit for interactive terminal UIs
  Shell Scripting Text Processing #
• jq (jqlang.org) tool
  sed for JSON: slice, filter and reshape structured data; portable C, dependency-free single binary
  Text Processing #
• Home | TCPDUMP & LIBPCAP (tcpdump.org) tool
  Upstream releases, man pages and filter syntax for the pcap capture library and its analyzer
  Network Diagnostic Packet Capture #
• GitHub - traviscross/mtr: Official repository for mtr, a network diagnostic tool (GitHub) repo
  traceroute and ping in one: probes each hop and prints running loss and latency statistics; GPLv2 C source
  Network Diagnostic #
• iperf3 — iperf3 3.21 documentation (software.es.net) reference
  Active TCP/UDP throughput measurement with tunable buffers and JSON output; not compatible with iperf2
  Network Diagnostic Performance Analysis #
• Partition Recovery and File Undelete (CGSecurity) tool
  GPLv2 rescue of lost partitions and boot sectors, plus PhotoRec undelete across FAT, NTFS and ext
  Data Recovery Filesystem #
• explainshell.com - match command-line arguments to their help text (explainshell.com) tool
  Paste a command line and get every flag mapped back to the matching part of its man page
  Shell Scripting Web Application #
• cheat.sh/:firstpage (cheat.sh) tool
  Cheat sheets fetched by curl or the cht.sh client, covering unix commands and 60+ languages
  Shell Scripting #
• Linux Containers - Incus - Introduction (linuxcontainers.org) reference
  Community-run LXD fork managing system containers and VMs side by side through one REST API and CLI
  Container Virtualization #
• Podman (podman.io) tool
  Daemonless, rootless OCI container engine with pods and Kubernetes-compatible local workflows
  Container Kubernetes #
• Homebrew (Homebrew) tool
  Formulae and casks for macOS, Linux and WSL; taps let anyone publish outside the reviewed core repo
  macOS Package Manager #
• mpv.io (mpv.io) tool
  Minimal player driven by Lua scripts, with GPU decoding, OpenGL/Vulkan output and embeddable C API
  Media Player #
• Neovim (Neovim) tool
  Vim fork with built-in Lua, an embedding API and external UIs; Vimscript and Vim 8 plugins still work
  Text Editor #
• The GNU Privacy Guard (gnupg.org) tool
  command-line OpenPGP implementation with key management, S/MIME and ssh support; Gpg4win for Windows
  Email Encryption #