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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