diff --git a/install/install.sh b/install/install.sh
index e8f3cd8..38046c7 100644
--- a/install/install.sh
+++ b/install/install.sh
@@ -7,10 +7,10 @@ uci_bash_shell_install () {
     # export BASH_SHELL_BASE="$(dirname "$(cd "$(dirname "${BASH_SOURCE:-$0}")" >/dev/null 2>&1 ; pwd -P )")"
     echo "Detected The UCI BASH Shell install directory: BASH_INSTALL_DIR=$install_dir"
     echo "Detected The UCI BASH Shell base directory: BASH_SHELL_BASE=$BASH_SHELL_BASE"
-    [[ $EUID -ne 0 ]] && usesudo="sudo -m"
+    [[ $EUID -ne 0 ]] && usesudo="sudo -E"
     $usesudo $SHELL $install_dir/scripts/copy-etc.sh
     $usesudo $SHELL $install_dir/scripts/copy-root.sh
-    [[ $1 ]] && [[ $(id -u $1 2> /dev/null) ]] && $usesudo -m $SHELL $install_dir/scripts/copy-user.sh "$@"
+    [[ $1 ]] && [[ $(id -u $1 2> /dev/null) ]] && $usesudo -E $SHELL $install_dir/scripts/copy-user.sh "$@"
     }
 
 # # if script was executed then call the function
diff --git a/modules/uci-shell-install.lib b/modules/uci-shell-install.lib
index b8c0b35..d87e1a4 100644
--- a/modules/uci-shell-install.lib
+++ b/modules/uci-shell-install.lib
@@ -21,10 +21,15 @@
 
 # must! be run as sudo
 install_shell_base () {
+    if [[ $1 == "-f" ]];then 
+    shift
+    echo forcing reinstall
+    else 
     if [[ $BASH_SHELL_BASE ]] && [[ -d $BASH_SHELL_BASE ]]; then
       echo appears that UCI shell base is already installed at $BASH_SHELL_BASE 
       echo upgrade instead using: 'module_load uci-shell-install; update_shell_base'
-      [[ $1 == "-f" ]] && { shift; echo forcing reinstall; } || return 1
+      return 1
+    fi
     fi
     if [[ ! $BASH_SHELL_GIT_URL ]]; then
       echo BASH_SHELL_GIT_URL must be set before install can proceed