Pacman Guide for Arch Linux

Basic Package Management

Search for a package in the repositories.
shell
```
sudo pacman -Ss <package-name>
```
Install a package from the repositories.
shell
```
sudo pacman -S <package-name>
```
Install a package from a .pacman file.
shell
```
sudo pacman -U <file-name.pacman>
```
Check if a package is installed.
shell
```
pacman -Qs <package-name>
```

Reinstall an installed package.

shell

sudo pacman -S <package-name> --needed --noconfirm

Remove a package, keep dependencies and configuration files.
shell
```
sudo pacman -R <package-name>
```
Remove a package and its unused dependencies, keep configuration files.
shell
```
sudo pacman -Rs <package-name>
```
Remove a package, unused dependencies, and configuration files.
shell
```
sudo pacman -Rns <package-name>
```
Remove a package and all packages that depend on it, keep unused dependencies.
shell
```
sudo pacman -Rc <package-name>
```
Forcefully remove a package without checking dependencies (dangerous).
shell
```
sudo pacman -Rdd <package-name>
```

Nuclear Option: Remove the package, configuration files, unused dependencies, and dependent packages.
shell
```
sudo pacman -Rnsc <package-name>
```
Tsar Bomb: Forcefully remove the package, dependencies, and dependent packages. Ignores dependency checks (highly dangerous).
shell
```
sudo pacman -Rnscdd <package-name>
```

Update the local mirror list.
shell
```
sudo pacman -Syy
```
Update the system (sync package database and install updates).
shell
```
sudo pacman -Syu
```
Force refresh of mirrors and system update.
shell
```
sudo pacman -Syyu
```
Check for available updates (without applying them).
shell
```
sudo pacman -Qu
```
Show orphaned packages (packages not required by any other package).
shell
```
pacman -Qdt
```
Remove orphaned packages.
shell
```
sudo pacman -Rns $(pacman -Qdtq)
```
Check package integrity (to find missing or corrupted files).
shell
```
pacman -Qkk
```

Show detailed information about an installed package.
shell
```
pacman -Qi <package-name>
```
List files installed by a package.
shell
```
pacman -Ql <package-name>
```
List all installed packages.
shell
```
pacman -Q
```
List explicitly installed packages (ignores dependencies).
shell
```
pacman -Qe
```
List manually installed (AUR) packages.
shell
```
pacman -Qm
```

Delete cached packages, keep the most recent versions.
shell
```
sudo pacman -Sc
```
Delete the entire package cache.
shell
```
sudo pacman -Scc
```
Clear old package versions while keeping the last 3 versions.
shell
```
sudo paccache -r
```
List cached package files.
shell
```
sudo ls /var/cache/pacman/pkg/
```

Reinstall and update Pacman’s keyring.
shell
```
sudo pacman -Sy archlinux-keyring
```
Remove Pacman database lock (useful when you encounter a locked database).
shell
```
sudo rm /var/lib/pacman/db.lck
```
Forcibly reinstall all installed packages (useful for fixing many broken packages).
shell
```
sudo pacman -S $(pacman -Qq) --needed
```

List files that don't belong to any package.
shell
```
pacman -Qk | grep "no package owns"
```

Clean Pacman log, keeping only the last 1000 lines.

shell

sudo tail -n 1000 /var/log/pacman.log > /var/log/pacman.log