diff --git a/clone/clone b/clone/clone
index ce80edd..e54ae8f 100755
--- a/clone/clone
+++ b/clone/clone
@@ -1,5 +1,11 @@
 #!/bin/sh
 
+[ ! -e ./tmp -o ! -d ./tmp ] && mkdir ./tmp;
+[ ! -e ./server -o ! -d ./server ] && mkdir ./server;
+[ ! -e ./server/maintenance -o ! -d ./server/maintenance ] && mkdir ./server/maintenance;
+
+
+
 # [!] Check parameter : device file
 #========================================================#
 
@@ -34,7 +40,7 @@ step1(){
 		
 		read -p "    (!) umount $mounted (y/n) [n]" unmount;
 
-		test -n "$unmount" && test $unmount = "y" && sudo umount $mounted 2>> /dev/null >> /dev/null && echo "    > unmounted";
+		test -n "$unmount" && test $unmount = "y" && sudo umount $mounted 2> /dev/null > /dev/null && echo "    > unmounted";
 	done;
 	echo "<<< done";
 
@@ -57,7 +63,7 @@ step2(){
 	# (2) Init gpt entry #
 	# echo " ))) replace by real code (((";
 
-	echo -e "g\nw" | sudo fdisk $DEV 2>> /dev/null >> /dev/null;
+	echo -e "g\nw" | sudo fdisk $DEV 2> /dev/null > /dev/null;
 
 	echo "<<< done";
 
@@ -111,7 +117,7 @@ step4(){
 step5(){
 	echo "\n>>> [5] Updating users";
 
-	echo "   (.) Adding user satsuser";
+	echo "     (.) Adding user satsuser";
 	# shadow
 	echo "      /etc/shadow";
 	## TODO: Manage default password ##
@@ -123,7 +129,7 @@ step5(){
 	echo "satsuser:x:666:666:sats-user,,,:/home/sats-user:/bin/sh" | sudo tee -a /mnt/etc/passwd > /dev/null;
 	echo "satsuser:x:666:666:sats-user,,,:/home/sats-user:/bin/sh" | sudo tee -a /mnt/etc/passwd- > /dev/null;
 
-	echo "   (.) Removing pi's login password";
+	echo "     (.) Removing pi's login password";
 	# create temp file without pi's password
 	#sudo cat /mnt/etc/shadow | sed 's/pi:[^:]\+:/pi:*:/' | sudo tee /mnt/etc/shadow.tmp > /dev/null;
 	# write original files
@@ -143,13 +149,13 @@ step5(){
 step6(){
 	echo "\n>>> [6] Updating groups";
 
-	echo "   (.) Adding group ssh-key";
+	echo "     (.) Adding group ssh-key";
 	# group
 	echo "      /etc/group";
 	echo "ssh-key:x:555:pi,sats-user" | sudo tee -a /mnt/etc/group > /dev/null;
 	echo "ssh-key:x:555:pi,sats-user" | sudo tee -a /mnt/etc/group- > /dev/null;
 
-	echo "   (.) Adding group sats-user";
+	echo "     (.) Adding group sats-user";
 	# group
 	echo "      /etc/group";
 	echo "sats-user:x:666:sats-user" | sudo tee -a /mnt/etc/group > /dev/null;
@@ -166,33 +172,35 @@ step6(){
 # [7] Manage SSH keys #
 #========================================================#
 step7(){
-	echo "\n>>> [7] Create ssh keys";
+	echo "\n>>> [7] Manage ssh keys";
 
 	# (1) Create ssh key pair #
-	echo "   (.) Create ssh key [ecdsa:521]";
-	echo -e "\n\n" | ssh-keygen -t ecdsa -b 521 -C "[ECDSA:521] SATS" -f tmp/id_ecdsa;
+	echo "    (.) Create ssh key [ecdsa:521]";
+	ssh-keygen -t ecdsa -b 521 -C "[ECDSA:521] SATS" -f ./tmp/id_ecdsa -P "" 2> /dev/null > /dev/null;
 
 	# (2) Add public key to server's `authorized_keys` file #
-	echo "   (.) Add public key to server's list";
-	cat tmp/id_ecdsa.pub >> server/authorized_keys;
+	echo "    (.) Add public key to server's list";
+	test ! -e ./server/authorized_keys && touch ./server/authorized_keys;
+	cat ./tmp/id_ecdsa.pub >> ./server/authorized_keys;
 
 	# (3) Create ssh file system #
-	echo "   (.) init ssh folder (/home/sats-user/.ssh)";
-	sudo mkdir /mnt/home/sats-user/.ssh;
+	echo "    (.) Init ssh folder (/home/sats-user/.ssh)";
+	sudo mkdir -p /mnt/home/sats-user/.ssh;
 	
 
 	# (4) Add both keys to sats-user files #
-	echo "   (.) add keys to ssh folder";
-	sudo mv tmp/id_ecdsa /mnt/home/sats-user/.ssh/id_ecdsa;
-	sudo mv tmp/id_ecdsa.pub /mnt/home/sats-user/.ssh/id_ecdsa.pub;
+	echo "    (.) Add keys to ssh folder";
+	sudo mv ./tmp/id_ecdsa /mnt/home/sats-user/.ssh/id_ecdsa;
+	sudo mv ./tmp/id_ecdsa.pub /mnt/home/sats-user/.ssh/id_ecdsa.pub;
 
 
 	# (5) Add maintenance keys #
 	echo "    (.) Add maintenance keys'";
-	cat server/maintenance/*.pub | sudo tee /mnt/home/sats-user/.ssh/authorized_keys;
+	sudo touch /mnt/home/sats-user/.ssh/authorized_keys;
+	cat ./server/maintenance/*.pub | sudo tee /mnt/home/sats-user/.ssh/authorized_keys > /dev/null;
 
 	# (6) Set up permissions #
-	echo "   (.) Set up permissions";
+	echo "    (.) Set up permissions";
 	sudo chown -R 666:666 /mnt/home/sats-user/.ssh/;
 	sudo chmod 400 /mnt/home/sats-user/.ssh/*;