@@ -21,6 +21,13 @@

 # Learn more and get the most recent version at http://devstack.org

+# check if someone has invoked with "sh"

+if [[ "${POSIXLY_CORRECT}" == "y" ]]; then

+    echo "You appear to be running bash in POSIX compatability mode."

+    echo "devstack uses bash features. \"./stack.sh\" should do the right thing"

+    exit 1

+fi

+

 # Make sure custom grep options don't get in the way

 unset GREP_OPTIONS