diff --git a/files/install/installCCS.sh b/files/install/installCCS.sh
index 474882c..29fd71b 100755
--- a/files/install/installCCS.sh
+++ b/files/install/installCCS.sh
@@ -6,11 +6,12 @@ if [ $# -eq 0 ]; then
     exit 1
 fi
 
-ENVIRONMENT=$1
-NODE_NAME=$2
+TAG=$1
+ENVIRONMENT=$2
+NODE_NAME=$3
 
 BASEDIR=$(dirname "$0")
-DEV_PACKAGE_DIR="/lsst/ccsadm/dev-package-lists"
+DEV_PACKAGE_DIR="/home/ccs/dev-package-lists"
 RELEASE_INSTALL_SCRIPT="/lsst/ccsadm/release/bin/install.py"
 CCS_INSTALL_DIR="/lsst/ccs/"$(date +%Y%m%d)
 
@@ -28,13 +29,90 @@ then
 
     # Check that the dev-package-lists github project is up to date.
     # If not abort.
+    if [ ! -d $DEV_PACKAGE_DIR ]; then
+	git clone https://github.com/lsst-camera-dh/dev-package-lists.git $DEV_PACKAGE_DIR
+    fi
+    cd $DEV_PACKAGE_DIR || exit
+    if ! gitCheckout=$(git checkout $TAG) ;then	
+	echo "Tag $TAG does not exist"
+	exit
+    fi
+
+    if ! gitPull=$(git pull); then
+	echo "Something went wrong when updating $DEV_PACKAGE_DIR: $?: $gitPull"
+	exit
+    fi
+    
+    gitStatus=$(git status)
+    if [[ $gitStatus != *"nothing to commit, working tree clean"* ]]; then
+	echo Directory $DEV_PACKAGE_DIR is not up to date. Exiting.
+	exit
+    fi
+
+    # Check that the install script exists. If not abort.
+    if [ ! -f "$RELEASE_INSTALL_SCRIPT" ]; then
+	echo "The release package install script is not available at $RELEASE_INSTALL_SCRIPT"
+	exit
+    fi
+
+    echo "Performing new installation of CCS software in $CCS_INSTALL_DIR"
+
+    if [ -z "$NODE_NAME" ]; then
+	echo recalculating node name
+	IN=$(uname -n)
+	NODE_NAME=${IN%%.*}
+    fi
+
+    $RELEASE_INSTALL_SCRIPT --ccs_inst_dir "$CCS_INSTALL_DIR" "$DEV_PACKAGE_DIR/$ENVIRONMENT/$NODE_NAME/ccsApplications.txt"
+
+else
+    echo "$VERIFY_USER"
+fi
+#The first argument must be the environment IR2|ATS|IR2-Simulated
+if [ $# -eq 0 ]; then
+    echo One argument must be provided: the environment
+    exit 1
+fi
+
+TAG=$1
+ENVIRONMENT=$2
+NODE_NAME=$3
+
+BASEDIR=$(dirname "$0")
+DEV_PACKAGE_DIR="/home/ccs/dev-package-lists"
+RELEASE_INSTALL_SCRIPT="/lsst/ccsadm/release/bin/install.py"
+CCS_INSTALL_DIR="/lsst/ccs/"$(date +%Y%m%d)
+
+# Check if there is already an installation directory, in which case abort.
+# What should be done in this case? Remove the directory or run the update script?
+if [ -d "$CCS_INSTALL_DIR" ]; then
+  echo "Installation directory $CCS_INSTALL_DIR already exists. Exiting."
+  exit
+fi
+
+VERIFY_USER=$("$BASEDIR/verifyUser.sh" ccs)
+
+if [ "$VERIFY_USER" == 1 ]
+then
+
+    # Check that the dev-package-lists github project is up to date.
+    # If not abort.
+    if [ ! -d $DEV_PACKAGE_DIR ]; then
+	git clone https://github.com/lsst-camera-dh/dev-package-lists.git $DEV_PACKAGE_DIR
+    fi
     cd $DEV_PACKAGE_DIR || exit
+    if ! gitCheckout=$(git checkout $TAG) ;then	
+	echo "Tag $TAG does not exist"
+	exit
+    fi
+
     if ! gitPull=$(git pull); then
 	echo "Something went wrong when updating $DEV_PACKAGE_DIR: $?: $gitPull"
 	exit
     fi
+    
     gitStatus=$(git status)
-    if [[ $gitStatus != *"nothing to commit, working directory clean"* ]]; then
+    if [[ $gitStatus != *"nothing to commit, working tree clean"* ]]; then
 	echo Directory $DEV_PACKAGE_DIR is not up to date. Exiting.
 	exit
     fi