I run this from time to time because it's faster than starting a system update and then canceling it if I only want to see the updates.

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Nick Janetakis

A practical shell alias called `outdated` that quickly lists packages with available updates across Arch Linux, Debian/Ubuntu, and macOS without triggering a full system update. For Arch, it combines `checkupdates` and `yay -Qua` to show both official and AUR package updates. For Debian/Ubuntu, it uses `apt-get update` and `apt list --upgradable`. For macOS, it uses `brew outdated` for both formulas and casks. Sample output is shown for each platform, and a bonus `pkg outdated` wrapper for Arch is also demonstrated.

A Shell Alias for Getting Outdated Packages in Arch, Debian and macOS — Nick Janetakis