31 lines
1.4 KiB
Markdown
31 lines
1.4 KiB
Markdown
---
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title: "pacman-contrib"
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category: "Desktop and system"
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tagline: "Extra pacman tools: cache cleaning, update checks, dependency trees and more."
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source: "pacman"
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package: "pacman-contrib"
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command: "paccache"
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code: "https://gitlab.archlinux.org/pacman/pacman-contrib"
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links:
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- name: "Cleaning the package cache"
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url: "https://wiki.archlinux.org/title/Pacman#Cleaning_the_package_cache"
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---
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## What it is
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pacman-contrib is a set of small tools that go with pacman, Arch's package manager. `paccache` cleans old package files out of pacman's cache, `checkupdates` lists available updates without touching your system, `pactree` shows what a package depends on, and `pacdiff` helps merge changed configuration files after an update.
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```
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pactree -r openssl
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```
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## Why it's here
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- **Disk space.** pacman keeps every package it downloads, and paccache trims that.
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- **Answers about packages.** See why something is installed, or what depends on it.
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- **Config merges.** pacdiff finds the `.pacnew` files updates leave behind.
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## On CoreDesktop
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pacman-contrib is installed from pacman as one of CoreDesktop's maintenance tools. At the end of each [`update`](/utilities/#update), `paccache` keeps the two most recent versions of each installed package in the cache and removes all cached versions of uninstalled ones. If `update` stops because `/` is low on space, `sudo paccache -rk1` frees more.
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