Pacman Cheatsheet

• Install: pacman -S package
• Clean the whole package cache: pacman -Scc
• Uninstall completely (including config files and unneeded deps): pacman -Rcns package
• Remove all orphaned packages (pacman's equivalent of apt autoremove):

sudo pacman -Rcns $(pacman -Qdtq)

More that are worth knowing

• sudo pacman -Syu — refresh the package database and upgrade every installed package.
• pacman -Ss pattern — search package names and descriptions in the repos; pacman -Qs pattern — search the same way, but only among already installed packages.
• pacman -Si package — show info about a repo package; pacman -Qi package — show info about a package that's installed locally.
• pacman -Qo /usr/bin/vim — show which installed package owns a file.
• pacman -Ql package — list every file a package installed.
• pacman -Qe — list packages installed explicitly (the ones you asked for, not pulled in as dependencies).
• sudo pacman -Sc — remove unused cached packages, keeping only the latest versions of what's installed; a gentler version of -Scc, which wipes the whole cache.
• sudo pacman -D --asdeps package — mark a package as a dependency, so it shows up as an orphan if nothing needs it anymore; sudo pacman -D --asexplicit package — mark it as explicitly installed so orphan detection (-Qdt) skips it.