Create pacman.md

common/pacman.md

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+# pacman
+
+> Arch Linux package manager utility
+
+- synchronize and update all packages
+ 
+`pacman -Syyu`
+
+- install a new package
+
+`pacman -S package-name`
+
+- remove a package and it's dependencies
+ 
+`pacman -Rs package-name`
+
+- search the package database for a keyword
+
+`pacman -Ss icon theme`
+
+- list installed packages and versions
+
+`pacman -Q`