Fixed #126

install.sh

@@ -390,8 +390,42 @@ remove() {
   fi
 }
 
+dialog_installer() {
+  if [[ ! -x /usr/bin/dialog ]];  then
+    if [[ $UID -ne $ROOT_UID ]];  then
+      #Check if password is cached (if cache timestamp not expired yet)
+      sudo -n true 2> /dev/null && echo
+
+      if [[ $? == 0 ]]; then
+        #No need to ask for password
+        exec sudo $0
+      else
+        #Ask for password
+        prompt -e "\n [ Error! ] -> Run me as root! "
+        read -p " [ Trusted ] Specify the root password : " -t ${MAX_DELAY} -s
+
+        sudo -S echo <<< $REPLY 2> /dev/null && echo
+
+        if [[ $? == 0 ]]; then
+          #Correct password, use with sudo's stdin
+          sudo $0 <<< $REPLY
+        else
+          #block for 3 seconds before allowing another attempt
+          sleep 3
+          prompt -e "\n [ Error! ] -> Incorrect password!\n"
+          exit 1
+        fi
+      fi
+    fi
+    install_dialog
+  fi
+  run_dialog
+  install "${theme}" "${icon}" "${screen}"
+}
+
 while [[ $# -gt 0 ]]; do
   PROG_ARGS+=("${1}")
+  dialog='false'
   case "${1}" in
     -b|--boot)
       THEME_DIR="/boot/grub/themes"
@@ -511,38 +545,7 @@ while [[ $# -gt 0 ]]; do
 done
 
 # Show terminal user interface for better use
-if [[ $# -eq 0 ]]; then
+if [[ "${dialog:-}" == 'false' ]]; then
-  if [[ ! -x /usr/bin/dialog ]];  then
-    if [[ $UID -ne $ROOT_UID ]];  then
-      #Check if password is cached (if cache timestamp not expired yet)
-      sudo -n true 2> /dev/null && echo
-
-      if [[ $? == 0 ]]; then
-        #No need to ask for password
-        exec sudo $0
-      else
-        #Ask for password
-        prompt -e "\n [ Error! ] -> Run me as root! "
-        read -p " [ Trusted ] Specify the root password : " -t ${MAX_DELAY} -s
-
-        sudo -S echo <<< $REPLY 2> /dev/null && echo
-
-        if [[ $? == 0 ]]; then
-          #Correct password, use with sudo's stdin
-          sudo $0 <<< $REPLY
-        else
-          #block for 3 seconds before allowing another attempt
-          sleep 3
-          prompt -e "\n [ Error! ] -> Incorrect password!\n"
-          exit 1
-        fi
-      fi
-    fi
-    install_dialog
-  fi
-  run_dialog
-  install "${theme}" "${icon}" "${screen}"
-else
   if [[ "${remove:-}" != 'true' ]]; then
     for theme in "${themes[@]-${THEME_VARIANTS[0]}}"; do
       for icon in "${icons[@]-${ICON_VARIANTS[0]}}"; do
@@ -556,6 +559,8 @@ else
       remove "${theme}"
     done
   fi
+  else
+  dialog_installer
 fi
 
 exit 1