diff --git a/core_functions.sh b/core_functions.sh
index 3c3bf07..ddcd20b 100644
--- a/core_functions.sh
+++ b/core_functions.sh
@@ -548,8 +548,14 @@ function usage () {
   printf "\n"
 	printf $NORMAL
 	printf "Usage : yggdrasil [options]\n\n"
-  printf " "$BOLDVERT"-f"$NORMAL" : full install (see doc for more details)\n"
+  printf " "$BOLDVERT"-f"$NORMAL" : install everything (see doc for exceptions)\n"
+  printf " "$BOLDVERT"-a"$NORMAL" : install all apps\n"
   printf " "$BOLDVERT"-c"$NORMAL" : install gtk themes and icons\n"
+  printf " "$BOLDVERT"-d"$NORMAL" : install DNS Cache Unbound\n"
+  printf " "$BOLDVERT"-k"$NORMAL" : install cardreader apps\n"
+  printf " "$BOLDVERT"-s"$NORMAL" : install Solaar for Logitech devices\n"
+  printf " "$BOLDVERT"-t"$NORMAL" : install TLP for Laptops and low energy usage\n"
+  printf " "$BOLDVERT"-n"$NORMAL" : install lastest Nvidia graphic drivers\n"
   printf " "$BOLDVERT"-u"$NORMAL" : update system (apt,snap,...)\n"
 	printf " "$BOLDVERT"-v"$NORMAL" : show verison number\n"
   printf " "$BOLDVERT"-h"$NORMAL" : show help & informations\n"
diff --git a/yggdrasil.sh b/yggdrasil.sh
index bacf250..3690a91 100755
--- a/yggdrasil.sh
+++ b/yggdrasil.sh
@@ -50,7 +50,7 @@ echo "--[ Yggdrasil log ]--[ "$cDate" ]--[ "$cTime" ]-----------------------" >>
 #
 # arguments/options management with getopts
 #
-while getopts ":h,v,f,c,t,u,a" option; do
+while getopts ":h,v,f,c,t,u,a,d,k,s,t,n" option; do
   case "$option" in
     t) #test purpose only
       #yggInit
@@ -146,6 +146,36 @@ while getopts ":h,v,f,c,t,u,a" option; do
       installThemes
       exit
       ;;
+    d) # install Unbound DNS Cache
+      yggInit
+      updateSystem
+      enableUnbound
+      exit
+      ;;
+    k) # cardreader
+      yggInit
+      updateSystem
+      installCardReader
+      exit
+      ;;
+    s) # solaar for logitech devices
+      yggInit
+      updateSystem
+      installSolaar
+      exit
+      ;;
+    t) # tlp (laptop or low energy usage)
+      yggInit
+      updateSystem
+      installTLP
+      exit
+      ;;
+    n) # latest nvidia driver (see menus if need older version)
+      yggInit
+      updateSystem
+      installNvidia384
+      exit
+      ;;
     u)
       yggInit
       updateSystem