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+# Pacman Cheat Sheet For Ubuntu Users
+
+> Mon 24th August 2020 By David T. Sadler.
+
+As a regular Ubuntu user I am used to using apt for system maintenance. But now that I've installed Arch Linux I will be using pacman and so below is a cheat sheet for myself that shows the pacman equivalent of some common apt actions.
+
+```
+Action                     | Apt                            | Pacman                     |
+---------------------------|--------------------------------|----------------------------|
+Install a package          | apt install <package name>     | pacman -S <package name>   |
+Remove a package           | apt remove <package name>      | pacman -Rs <package name>  |
+Search for a package       | apt serch <search term>        | pacman -Ss <regexp>        |
+Upgrade packages           | apt update && apt upgrade      | pacman -Syu                |
+Upgrade distribution       | apt update && apt dist-upgrade | pacman -Syu                |
+Clean up local caches      | apt autoclean                  | pacman -Scc                |
+Remove unused dependencies | apt autoremove                 | pacman -Qmq | pacman -Rs - |
+```
+
+## Install a Package
+
+```shell
+$ pacman --sync <package name>
+
+$ pacman -S <package name>
+```
+
+Installs a package and its dependencies.
+
+## Remove a Package
+
+```shell
+$ pacman --remove --recursive <package name>
+
+$ pacman -Rs <package name>
+```
+
+Removes a package and all its dependencies, provided that (A) they are not required by other packages; and (B) they were not explicitly installed by the user.
+
+## Search For a Package
+
+```shell
+$ pacman --sync --search <regexp>
+
+$ pacman -Ss <regexp>
+```
+
+Searches in the sync database for packages with a name or description that match the regexp.
+
+## Upgrade Packages
+
+```shell
+$ pacman --sync --refresh --sysupgrade
+
+$ pacman -Syu
+```
+
+Downloads a fresh copy of the master package database and then upgrades all out-of-date packages.
+
+## Upgrade Distribution
+
+```shell
+$ pacman --sync --refresh --sysupgrade
+
+$ pacman -Syu
+```
+
+Since Arch uses a rolling release system there is no distribution version as you just upgrade your packages to their latest versions.
+
+## Clean Up Local Caches
+
+```shell
+$ pacman --sync --clean --clean
+
+$ pacman -Scc
+```
+
+Free up disk space by removing from the cache any packages that are no longer installed. Also removes any cached sync databases.
+
+## Remove Used Dependencies
+
+```shell
+$ pacman --query --deps --unrequired --quiet | pacman --remove --recursive -
+
+$ pacman -Qdtq | pacman -Rs -
+```
+
+Remove dependencies that are no longer needed, because e.g. the package which needed the dependencies was removed.
+
+### Links
+
+=> /posts/arch/2020-05-25/installing-arch-linux-on-a-x220-thinkpad/ Installing Arch Linux on a Thinkpad X220.
+
+=> /posts/arch/ Arch - Read More Posts.
+
+I don't have comments as I don't want to manage them. You can however contact me at the below address if you want to.
+
+=> mailto:david@davidtsadler.com Email david@davidtsadler.com
+
+=> https://creativecommons.org/licenses/by-sa/4.0/ The contents of this site is licensed under a Creative Commons Attribution-ShareAlike 4.0 International License.
+
+Copyright © 2021 David T. Sadler.
+
+=> / Return to Homepage.