diff --git a/cmd/pembody/pembody.go b/cmd/pembody/pembody.go
new file mode 100644
index 0000000..e8ed7e4
--- /dev/null
+++ b/cmd/pembody/pembody.go
@@ -0,0 +1,28 @@
+package main
+
+import (
+	"encoding/pem"
+	"flag"
+	"fmt"
+	"io/ioutil"
+
+	"github.com/kisom/goutils/lib"
+)
+
+func main() {
+	flag.Parse()
+	if flag.NArg() != 1 {
+		lib.Errx(lib.ExitFailure, "a single filename is required")
+	}
+
+	in, err := ioutil.ReadFile(flag.Arg(0))
+	if err != nil {
+		lib.Err(lib.ExitFailure, err, "couldn't read file")
+	}
+
+	p, _ := pem.Decode(in)
+	if p == nil {
+		lib.Errx(lib.ExitFailure, "%s isn't a PEM-encoded file", flag.Arg(0))
+	}
+	fmt.Printf("%s", p.Bytes)
+}
diff --git a/mwc/mwc_test.go b/mwc/mwc_test.go
new file mode 100644
index 0000000..c9af36c
--- /dev/null
+++ b/mwc/mwc_test.go
@@ -0,0 +1,27 @@
+package mwc
+
+import (
+	"bytes"
+	"testing"
+
+	"github.com/kisom/testio"
+)
+
+func TestMWC(t *testing.T) {
+	buf1 := testio.NewBufCloser(nil)
+	buf2 := testio.NewBufCloser(nil)
+
+	mwc := MultiWriteCloser(buf1, buf2)
+
+	if _, err := mwc.Write([]byte("hello, world")); err != nil {
+		t.Fatalf("%v", err)
+	}
+
+	if !bytes.Equal(buf1.Bytes(), buf2.Bytes()) {
+		t.Fatal("write failed")
+	}
+
+	if !bytes.Equal(buf1.Bytes(), []byte("hello, world")) {
+		t.Fatal("writing failed")
+	}
+}