diff --git a/test-network-nano-bash/ca/ca_utils.sh b/test-network-nano-bash/ca/ca_utils.sh
index 640e0a78a..9f0d208d1 100755
--- a/test-network-nano-bash/ca/ca_utils.sh
+++ b/test-network-nano-bash/ca/ca_utils.sh
@@ -10,7 +10,7 @@
 #  Primary purpose it to create enrollment certificates for CA admins.
 ######################################################################################
 
-function createEnrollment() {
+createEnrollment() {
 
   local port=$1             # port of the CA used for creating the enrollment
   local username=$2         # username of the registered user on the CA 
@@ -37,7 +37,7 @@ function createEnrollment() {
 #
 ######################################################################################
 
-function createMSP() {
+createMSP() {
 
   local caname=$1       # name of the ca (ordererca, org1ca, org2ca)
   local orgname=$2      # name of the org (org1, org2)  Ordering Org is blank
@@ -61,7 +61,7 @@ function createMSP() {
 #  enrollent and TLS certificates for peers and orderers.
 ######################################################################################
 
-function registerAndEnroll() {
+registerAndEnroll() {
 
   local port=$1              # port of the CA used for creating the enrollment
   local username=$2          # username of the user to register on the CA 
diff --git a/test-network-nano-bash/external_builders/golang/bin/run b/test-network-nano-bash/external_builders/golang/bin/run
index 48697ab68..0f11f044f 100755
--- a/test-network-nano-bash/external_builders/golang/bin/run
+++ b/test-network-nano-bash/external_builders/golang/bin/run
@@ -7,6 +7,8 @@ exec 1>&2
 BUILD_OUTPUT_DIR="$1"
 RUN_METADATA_DIR="$2"
 
+LOG_DIRECTORY=${PWD}/logs
+
 #######################################
 # Export environment variables and extract certificate files from chaincode.json
 # Globals:
@@ -51,5 +53,4 @@ process_chaincode_metadata_json
 # output for debug purposes
 env | grep CORE | sort
 
-
-exec "${BUILD_OUTPUT_DIR}/chaincode" -peer.address="${CORE_PEER_ADDRESS}"
+exec "${BUILD_OUTPUT_DIR}/chaincode" -peer.address="${CORE_PEER_ADDRESS}" > ${LOG_DIRECTORY}/${CORE_CHAINCODE_ID_NAME}.log 2>&1
diff --git a/test-network-nano-bash/external_builders/node/bin/run b/test-network-nano-bash/external_builders/node/bin/run
index 139b4f499..e5e595b8f 100755
--- a/test-network-nano-bash/external_builders/node/bin/run
+++ b/test-network-nano-bash/external_builders/node/bin/run
@@ -8,6 +8,8 @@ exec 1>&2
 BUILD_OUTPUT_DIR="$1"
 RUN_METADATA_DIR="$2"
 
+LOG_DIRECTORY=${PWD}/logs
+
 cd "${BUILD_OUTPUT_DIR}"
 ls -lart
 
@@ -34,12 +36,17 @@ else
     jq -r .client_cert "$RUN_METADATA_DIR/chaincode.json" > "$CORE_TLS_CLIENT_CERT_FILE"
     jq -r .client_key  "$RUN_METADATA_DIR/chaincode.json" > "$CORE_TLS_CLIENT_KEY_FILE"
     jq -r .root_cert   "$RUN_METADATA_DIR/chaincode.json" > "$CORE_PEER_TLS_ROOTCERT_FILE"
-    
-    base64 -i "${CORE_TLS_CLIENT_CERT_FILE}" > "${CORE_TLS_CLIENT_CERT_PATH}"
-    base64 -i "${CORE_TLS_CLIENT_KEY_FILE}" > "${CORE_TLS_CLIENT_KEY_PATH}"
 
-    #base64 -w 0 "${CORE_TLS_CLIENT_CERT_FILE}" > "${CORE_TLS_CLIENT_CERT_PATH}"
-    #base64 -w 0 "${CORE_TLS_CLIENT_KEY_FILE}" > "${CORE_TLS_CLIENT_KEY_PATH}"
+    if [ "${OSTYPE}" == "linux-gnu" ]; then
+        base64 -w 0 "${CORE_TLS_CLIENT_CERT_FILE}" > "${CORE_TLS_CLIENT_CERT_PATH}"
+        base64 -w 0 "${CORE_TLS_CLIENT_KEY_FILE}" > "${CORE_TLS_CLIENT_KEY_PATH}"
+    elif [[ "${OSTYPE}" == "darwin"* ]]; then
+        base64 -i "${CORE_TLS_CLIENT_CERT_FILE}" > "${CORE_TLS_CLIENT_CERT_PATH}"
+        base64 -i "${CORE_TLS_CLIENT_KEY_FILE}" > "${CORE_TLS_CLIENT_KEY_PATH}"
+    else
+	      echo "OS "${OS}" not supported"
+	      exit 1
+    fi
 
     ls -lart "$BUILD_OUTPUT_DIR"
 fi
@@ -48,4 +55,4 @@ fi
 env | grep CORE | sort
 
 # run the chaincode
-exec npm start -- --peer.address="${CORE_PEER_ADDRESS}"
+exec npm start -- --peer.address="${CORE_PEER_ADDRESS}" > ${LOG_DIRECTORY}/${CORE_CHAINCODE_ID_NAME}.log 2>&1