pacman-query: add page (#5269)

pages/linux/pacman-query.md

@@ -0,0 +1,36 @@
+# pacman --query
+
+> Arch Linux package manager utility.
+> More information: <https://man.archlinux.org/man/pacman.8>.
+
+- List installed packages and versions:
+
+`pacman --query`
+
+- List only packages and versions that were explicitly installed:
+
+`pacman --query --explicit`
+
+- Find which package owns a file:
+
+`pacman --query --owns {{filename}}`
+
+- Display information about an installed package:
+
+`pacman --query --info {{package_name}}`
+
+- List files owned by a package:
+
+`pacman --query --list {{package_name}}`
+
+- List orphan packages (installed as dependencies but not required by any package):
+
+`pacman --query --unrequired --deps --quiet`
+
+- List installed packages not found in the repositories:
+
+`pacman --query --foreign`
+
+- List outdated packages:
+
+`pacman --query --upgrades`