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+---
+title: Pacman
+category: Linux
+updated: 2018-07-07
+intro: |
+  Pacman is the package manager for Arch linux and its derivatives.
+---
+
+## Commands
+{: .-three-column}
+
+### Common commands
+
+| Command                 | Description                       |
+| ----------------------- | --------------------------------- |
+| `pacman -Syu <pkg>`     | Install (and update package list) |
+| `pacman -S <pkg>`       | Install only                      |
+| `pacman -Rsc <pkg>`     | Uninstall                         |
+| `pacman -Ss <keywords>` | Search                            |
+| `pacman -Syu`           | Upgrade everything                |
+{: .-prime}
+
+### Query
+
+| Command              | Description                            |
+| -------------------- | -------------------------------------- |
+| `pacman -Qe`         | List explictly-installed packages      |
+| ---                  | ---                                    |
+| `pacman -Ql <pkg>`   | What files does this package have?     |
+| `pacman -Qii <pkg>`  | List information on package            |
+| ---                  | ---                                    |
+| `pacman -Qo <file>`  | Who owns this file?                    |
+| ---                  | ---                                    |
+| `pacman -Qs <query>` | Search installed packages for keywords |
+
+### Orphans
+
+| Command                       | Description                 |
+| ----------------------------- | --------------------------- |
+| `pacman -Qdt`                 | List unneeded packages      |
+| `pacman -Rns $(pacman -Qdtq)` | Uninstall unneeded packages |
+
+Avoid orphans by using `pacman -Rsc` to remove packages, which will remove unneeded dependencies.
+
+### Other
+
+| Command            | Description                |
+| ------------------ | -------------------------- |
+| `pactree <pkg>`    | What does _pkg_ depend on? |
+| `pactree -r <pkg>` | What depends on _pkg_?     |
+
+### References
+
+* [Pacman tips and tricks](https://wiki.archlinux.org/index.php/Pacman/Tips_and_tricks) _(wiki.archlinux.org)_