diff --git a/clean.sh b/clean.sh
new file mode 100644
index 0000000000..1582321863
--- /dev/null
+++ b/clean.sh
@@ -0,0 +1 @@
+rm -rf build
diff --git a/examples/deps/clean.sh b/examples/deps/clean.sh
index d6f800d026..bb08ef93ed 100644
--- a/examples/deps/clean.sh
+++ b/examples/deps/clean.sh
@@ -1,3 +1,3 @@
-rm -r a/build
-rm -r b/build
-rm -r foo/build
+rm -rf a/build
+rm -rf b/build
+rm -rf foo/build
diff --git a/examples/hello/clean.sh b/examples/hello/clean.sh
index 07cbd15340..1582321863 100644
--- a/examples/hello/clean.sh
+++ b/examples/hello/clean.sh
@@ -1 +1 @@
-rm -r build
+rm -rf build
diff --git a/examples/io/clean.sh b/examples/io/clean.sh
index 07cbd15340..1582321863 100644
--- a/examples/io/clean.sh
+++ b/examples/io/clean.sh
@@ -1 +1 @@
-rm -r build
+rm -rf build
diff --git a/examples/test.sh b/examples/test.sh
new file mode 100644
index 0000000000..b24edadb15
--- /dev/null
+++ b/examples/test.sh
@@ -0,0 +1,14 @@
+echo 'testing hello'
+cd hello
+./test.sh
+cd ..
+
+echo 'testing io'
+cd io
+./test.sh
+cd ..
+
+echo 'testing deps'
+cd deps
+./test.sh
+cd ..