diff --git a/bin/assert/string b/bin/assert/string
index a8b90bd..0d48759 100755
--- a/bin/assert/string
+++ b/bin/assert/string
@@ -4,3 +4,31 @@ set -v # Turn on verbose logging, so that the following will present a tutorial.
 
 # assert module api is loaded with the line 'api/assert' in shell/includes.
 
+if assert string "test" equals "test"
+then
+  log "The string test is equal to test!"
+else
+  log "The string test is not equal to test!"
+fi
+
+if assert string "test" equals "fail"
+then
+  log "The string test is equal to fail!"
+else
+  log "The string test is not equal to fail!"
+fi
+
+if assert string "" is empty
+then
+  log "The string is empty!"
+else
+  log "The string is not empty!"
+fi
+
+if assert string "non empty" is nonempty
+then
+  log "The string is non empty!"
+else
+  log "The string is empty!"
+fi
+
diff --git a/bin/interactive/shell b/bin/interactive/shell
index e69de29..c5cd558 100755
--- a/bin/interactive/shell
+++ b/bin/interactive/shell
@@ -0,0 +1,13 @@
+#!/bin/sh
+
+set -v # Turn on verbose logging, so that the following will present a tutorial.
+
+# interactive(s) module is loaded with line 'api/interactive' in an
+# extension's shell/includes file.
+
+if shell is interactive 
+then
+  log "This shell is interactive!"
+else
+  log "This shell is not interactive."
+fi
diff --git a/bin/service/activate b/bin/service/activate
deleted file mode 100755
index 1a24852..0000000
--- a/bin/service/activate
+++ /dev/null
@@ -1 +0,0 @@
-#!/bin/sh
diff --git a/bin/service/cli b/bin/service/cli
deleted file mode 100755
index 1a24852..0000000
--- a/bin/service/cli
+++ /dev/null
@@ -1 +0,0 @@
-#!/bin/sh
diff --git a/bin/service/confd b/bin/service/confd
deleted file mode 100755
index 1a24852..0000000
--- a/bin/service/confd
+++ /dev/null
@@ -1 +0,0 @@
-#!/bin/sh
diff --git a/bin/service/configcheck b/bin/service/configcheck
deleted file mode 100755
index 1a24852..0000000
--- a/bin/service/configcheck
+++ /dev/null
@@ -1 +0,0 @@
-#!/bin/sh
diff --git a/bin/service/deactivate b/bin/service/deactivate
deleted file mode 100755
index 1a24852..0000000
--- a/bin/service/deactivate
+++ /dev/null
@@ -1 +0,0 @@
-#!/bin/sh
diff --git a/bin/service/info b/bin/service/info
deleted file mode 100755
index 1a24852..0000000
--- a/bin/service/info
+++ /dev/null
@@ -1 +0,0 @@
-#!/bin/sh
diff --git a/bin/service/initd b/bin/service/initd
deleted file mode 100755
index 1a24852..0000000
--- a/bin/service/initd
+++ /dev/null
@@ -1 +0,0 @@
-#!/bin/sh
diff --git a/bin/service/initialize b/bin/service/initialize
deleted file mode 100755
index 1a24852..0000000
--- a/bin/service/initialize
+++ /dev/null
@@ -1 +0,0 @@
-#!/bin/sh
diff --git a/bin/service/list b/bin/service/list
deleted file mode 100755
index 1a24852..0000000
--- a/bin/service/list
+++ /dev/null
@@ -1 +0,0 @@
-#!/bin/sh
diff --git a/bin/service/logtail b/bin/service/logtail
deleted file mode 100755
index 1a24852..0000000
--- a/bin/service/logtail
+++ /dev/null
@@ -1 +0,0 @@
-#!/bin/sh
diff --git a/bin/service/pid b/bin/service/pid
deleted file mode 100755
index 1a24852..0000000
--- a/bin/service/pid
+++ /dev/null
@@ -1 +0,0 @@
-#!/bin/sh
diff --git a/bin/service/reload b/bin/service/reload
deleted file mode 100755
index 1a24852..0000000
--- a/bin/service/reload
+++ /dev/null
@@ -1 +0,0 @@
-#!/bin/sh
diff --git a/bin/service/restart b/bin/service/restart
deleted file mode 100755
index 1a24852..0000000
--- a/bin/service/restart
+++ /dev/null
@@ -1 +0,0 @@
-#!/bin/sh
diff --git a/bin/service/setup b/bin/service/setup
deleted file mode 100755
index 1a24852..0000000
--- a/bin/service/setup
+++ /dev/null
@@ -1 +0,0 @@
-#!/bin/sh
diff --git a/bin/service/signal b/bin/service/signal
deleted file mode 100755
index 1a24852..0000000
--- a/bin/service/signal
+++ /dev/null
@@ -1 +0,0 @@
-#!/bin/sh
diff --git a/bin/service/start b/bin/service/start
deleted file mode 100755
index 1a24852..0000000
--- a/bin/service/start
+++ /dev/null
@@ -1 +0,0 @@
-#!/bin/sh
diff --git a/bin/service/status b/bin/service/status
deleted file mode 100755
index 1a24852..0000000
--- a/bin/service/status
+++ /dev/null
@@ -1 +0,0 @@
-#!/bin/sh
diff --git a/bin/service/stop b/bin/service/stop
deleted file mode 100755
index 1a24852..0000000
--- a/bin/service/stop
+++ /dev/null
@@ -1 +0,0 @@
-#!/bin/sh
diff --git a/bin/service/uninstall b/bin/service/uninstall
deleted file mode 100755
index 1a24852..0000000
--- a/bin/service/uninstall
+++ /dev/null
@@ -1 +0,0 @@
-#!/bin/sh
diff --git a/bin/service/usage b/bin/service/usage
deleted file mode 100755
index 1a24852..0000000
--- a/bin/service/usage
+++ /dev/null
@@ -1 +0,0 @@
-#!/bin/sh