1 files changed, 15 insertions, 0 deletions
diff --git a/mrbgems/mruby-io/mrblib/kernel.rb b/mrbgems/mruby-io/mrblib/kernel.rb
new file mode 100644
index 000000000..373b76f98
--- /dev/null
+++ b/mrbgems/mruby-io/mrblib/kernel.rb
@@ -0,0 +1,15 @@
+module Kernel
+  def `(cmd)
+    IO.popen(cmd) { |io| io.read }
+  end
+
+  def open(file, *rest, &block)
+    raise ArgumentError unless file.is_a?(String)
+
+    if file[0] == "|"
+      IO.popen(file[1..-1], *rest, &block)
+    else
+      File.open(file, *rest, &block)
+    end
+  end
+end