Obtain the usb drive

src/freedombone-recoverkey

@@ -33,9 +33,24 @@ PROJECT_NAME='freedombone'
 export TEXTDOMAIN=${PROJECT_NAME}-recoverkey
 export TEXTDOMAINDIR="/usr/share/locale"
 
+source $PROJECT_INSTALL_DIR/${PROJECT_NAME}-vars
+
+# include utils which allow function_check, go and drive mount
+UTILS_FILES=/usr/share/${PROJECT_NAME}/utils/${PROJECT_NAME}-utils-*
+for f in $UTILS_FILES
+do
+  source $f
+done
+
+read_config_param USB_DRIVE
+
 FRIENDS_SERVERS_LIST=
 MY_USERNAME=
-GPG_USB_DRIVE='sdb1'
+if [ $USB_DRIVE ]; then
+    GPG_USB_DRIVE=$USB_DRIVE
+else
+    GPG_USB_DRIVE='/dev/sdb1'
+fi
 
 function show_help {
     echo ''