diff --git a/scripts/npm-add-pkg.sh b/scripts/npm-add-pkg.sh
index e101004dea..1cc10bef14 100755
--- a/scripts/npm-add-pkg.sh
+++ b/scripts/npm-add-pkg.sh
@@ -7,9 +7,11 @@ eval SAVE_OPT=false
 eval SAVE_DEV_OPT=false
 
 show_help() {
-    echo "Usage: npm-clean.sh"
+    echo "Usage: npm-add-pkg.sh"
+    echo ""
     echo "--save"
     echo "--save-dev"
+    echo "--save-exact"
 }
 
 eval projects=( "ng2-activiti-diagrams"
@@ -40,11 +42,17 @@ save_dev(){
     SAVE_DEV_OPT=true
 }
 
+save_dev(){
+    NAME_PKG=$1
+    SAVE_EXACT=true
+}
+
 while [[ $1  == -* ]]; do
     case "$1" in
       -h|--help|-\?) show_help; exit 0;;
       --save)  save $2; shift 2;;
       --save-dev)  save_dev $2; shift 2;;
+      --save-exact)  save_exact $2; shift 2;;
       -*) echo "invalid option: $1" 1>&2; show_help; exit 0;;
     esac
 done
@@ -62,6 +70,11 @@ do
      echo "======  npm install --save-dev ${NAME_PKG} ====="
       npm install --save-dev ${NAME_PKG}
     fi
+
+    if $SAVE_EXACT == true; then
+     echo "======  npm install ----save-exact${NAME_PKG} ====="
+      npm install --save-exact ${NAME_PKG}
+    fi
 done
 
 cd "$DIR/../demo-shell-ng2"
@@ -73,6 +86,10 @@ if $SAVE_DEV_OPT == true; then
   npm install --save-dev ${NAME_PKG}
 fi
 
+if $SAVE_EXACT == true; then
+  npm install --save-exact ${NAME_PKG}
+fi
+
 
 cd "$DIR/../ng2-components"
 
@@ -84,3 +101,6 @@ if $SAVE_DEV_OPT == true; then
   npm install --save-dev ${NAME_PKG}
 fi
 
+if $SAVE_EXACT == true; then
+  npm install --save-exact ${NAME_PKG}
+fi
diff --git a/scripts/npm-move-tag.sh b/scripts/npm-move-tag.sh
old mode 100755
new mode 100644