diff --git a/examples/sky/test-cfs.c b/examples/sky/test-cfs.c
new file mode 100644
index 000000000..b20ffef72
--- /dev/null
+++ b/examples/sky/test-cfs.c
@@ -0,0 +1,119 @@
+/*
+ * Copyright (c) 2007, Swedish Institute of Computer Science.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. Neither the name of the Institute nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * This file is part of the Contiki operating system.
+ *
+ * $Id: test-cfs.c,v 1.1 2007/03/23 12:17:28 adamdunkels Exp $
+ */
+
+/**
+ * \file
+ *         A quick program for testing the CFS xmem driver
+ * \author
+ *         Adam Dunkels <adam@sics.se>
+ */
+
+#include "contiki.h"
+#include "cfs/cfs.h"
+/*---------------------------------------------------------------------------*/
+PROCESS(cfs_process, "xmem cfs");
+AUTOSTART_PROCESSES(&cfs_process);
+/*---------------------------------------------------------------------------*/
+PROCESS_THREAD(cfs_process, ev, data)
+{
+  PROCESS_BEGIN();
+
+
+  {
+    int i, j, fd;
+    int errors = 0;
+    int filesize = 65000;
+#define CHUNKSIZE 128
+
+    fd = cfs_open("hej", CFS_WRITE);
+    if(fd < 0) {
+      printf("could not open file for writing, aborting\n");
+    } else {
+      unsigned char buf[CHUNKSIZE];
+      for(i = 0; i < filesize; i += CHUNKSIZE) {
+	for(j = 0; j < CHUNKSIZE; ++j) {
+	  buf[j] = i + j;
+	}
+	cfs_write(fd, buf, CHUNKSIZE);
+      }
+      cfs_close(fd);
+    }
+
+    fd = cfs_open("hej", CFS_READ);
+    if(fd < 0) {
+      printf("could not open file for reading, aborting\n");
+    } else {
+      for(i = 0; i < filesize; ++i) {
+	unsigned char buf;
+	cfs_read(fd, &buf, 1);
+	if(buf != i) {
+	  errors++;
+	  printf("error: diff at %d, %d != %d\n", i, i, buf);
+	}
+      }
+    }
+    printf("CFS xmem test 1 completed with %d errors\n", errors);
+
+      fd = cfs_open("hej", CFS_WRITE);
+    if(fd < 0) {
+      printf("could not open file for writing, aborting\n");
+    } else {
+      unsigned char buf[CHUNKSIZE];
+      for(i = 0; i < filesize; i += CHUNKSIZE) {
+	for(j = 0; j < CHUNKSIZE; ++j) {
+	  buf[j] = i + j + 1;
+	}
+	cfs_write(fd, buf, CHUNKSIZE);
+      }
+      cfs_close(fd);
+    }
+
+    fd = cfs_open("hej", CFS_READ);
+    if(fd < 0) {
+      printf("could not open file for reading, aborting\n");
+    } else {
+      for(i = 0; i < filesize; ++i) {
+	unsigned char buf;
+	cfs_read(fd, &buf, 1);
+	if(buf != i + 1) {
+	  errors++;
+	  printf("error: diff at %d, %d != %d\n", i, i, buf);
+	}
+      }
+    }
+    printf("CFS xmem test 2 completed with %d errors\n", errors);
+}
+
+  PROCESS_END();
+}
+/*---------------------------------------------------------------------------*/