pacman-sync: add page (#5268)

pages/linux/pacman-sync.md

@@ -0,0 +1,36 @@
+# pacman --sync
+
+> Arch Linux package manager utility.
+> More information: <https://man.archlinux.org/man/pacman.8>.
+
+- Install a new package:
+
+`sudo pacman --sync {{package_name}}`
+
+- Synchronize and update all packages (add `--downloadonly` to download the packages and not update them):
+
+`sudo pacman --sync --refresh --sysupgrade`
+
+- Update all packages and install a new one without prompting:
+
+`sudo pacman --sync --refresh --sysupgrade --noconfirm {{package_name}}`
+
+- Search the package database for a regular expression or keyword:
+
+`pacman --sync --search "{{search_pattern}}"`
+
+- Display information about a package:
+
+`pacman --sync --info {{package_name}}`
+
+- Overwrite conflicting files during a package update:
+
+`sudo pacman --sync --refresh --sysupgrade --overwrite {{path/to/file}}`
+
+- Synchronize and update all packages, but ignore a specific package (can be used more than once):
+
+`sudo pacman --sync --refresh --sysupgrade --ignore {{package_name}}`
+
+- Remove not installed packages and unused repositories from the cache (use two `--clean` flags to clean all packages):
+
+`sudo pacman --sync --clean`