diff --git a/core_functions.sh b/core_functions.sh
index 7421942..cb48b39 100644
--- a/core_functions.sh
+++ b/core_functions.sh
@@ -558,6 +558,7 @@ function usage () {
   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 " "$BOLDVERT"-w"$NORMAL" : install Nitrogen + remove desktop management from caja\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"
diff --git a/yggdrasil.sh b/yggdrasil.sh
index 339cc71..1bc6b13 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,u,a,d,k,s,t,n,T" option; do
+while getopts ":h,v,f,c,u,a,d,k,s,t,n,w,T" option; do
   case "$option" in
     T) #test purpose only
       yggInit
@@ -107,6 +107,7 @@ while getopts ":h,v,f,c,u,a,d,k,s,t,n,T" option; do
       installViber
       installFranz
       installTeamViewer13
+      toolAutoremove
       exit
       ;;
     f) # full install
@@ -156,6 +157,7 @@ while getopts ":h,v,f,c,u,a,d,k,s,t,n,T" option; do
       installViber
       installFranz
       installTeamViewer13
+      toolAutoremove
       exit
       ;;
     c) # install themes and icons
@@ -166,6 +168,12 @@ while getopts ":h,v,f,c,u,a,d,k,s,t,n,T" option; do
       installThemes
       exit
       ;;
+    w) # nitrogen
+      yggInit
+      updateSystem
+      installNitrogen
+      exit
+      ;;
     d) # install Unbound DNS Cache
       yggInit
       updateSystem
@@ -201,6 +209,10 @@ while getopts ":h,v,f,c,u,a,d,k,s,t,n,T" option; do
       updateSystem
       exit
       ;;
+    p)
+      toolAutoremove
+      exit
+      ;;
     h) # display help
       usage
       exit