add dkms-update script for kernel

dkms-update

@@ -0,0 +1,23 @@
+#!/usr/bin/env ruby
+
+kernel_package = ARGV[0] || "linux"
+
+content = ""
+IO.popen(["pacman", "-Ql", kernel_package]) {|io| content = io.read }
+kernel = /\/usr\/lib\/modules\/(?<version>.*)\/kernel/.match(content)
+abort "no kernel version found in package" unless kernel
+
+mods = Dir["/usr/src/*"].sort
+mods.each do |mod|
+  match = /(?<name>[^\/-]+)-(?<version>.+)$/.match(mod)
+  unless match
+    puts "Skip module '#{mod}' (not following the name standard)"
+    next
+  end
+  args = ["dkms",
+          "install",
+          "-m", "#{match[:name]}/#{match[:version]}",
+          "-k", kernel[:version]]
+  puts "$ #{args.join(" ")}"
+  system(*args)
+end