Sysadmin

macOS

• Homebrew — The missing package manager for macOS.

Arch Linux

• Arch Linux — Home of the Arch Linux distribution.
• Arch Linux Manual Pages — Manual pages from the Arch package repositories.
• ArchWiki — Documentation for Arch and Linux in general.
• Arch Linux Packages — Search the official package repositories.
• AUR — The Arch User Repository.

Gentoo Linux

• Gentoo — Source-based distribution built with Portage.

Debian

• Debian — The universal operating system.
• Debian Wiki — Community documentation for Debian.

Ubuntu

• Ubuntu — Canonical’s Debian-based distribution.
• Ubuntu Key Server — OpenPGP key server run by Canonical.

Fedora

• Fedora — Upstream-first distribution sponsored by Red Hat.

FreeBSD

• FreeBSD — Home of the FreeBSD operating system.
• FreeBSD Docs — Handbook, articles, and manual pages.
• FreeBSD Manual Pages — Searchable manual pages across FreeBSD releases.

OpenBSD

• OpenBSD — Home of the OpenBSD operating system.
• OpenBSD Docs — The OpenBSD FAQ, the project’s main documentation.

Virtualization

• Docker — Containers for building and shipping applications.
• Oracle VirtualBox — Cross-platform virtualization for x86 and ARM.
• WSL — Windows Subsystem for Linux documentation.
• container (by Apple) — Apple’s CLI for Linux containers on macOS.

Forums

• Super User — Q&A site for computer enthusiasts and power users.
• r/sysadmin Subreddit List — Directory of sysadmin-related subreddits.

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