Bug fix: avoid installing when still installed

install.sh

@@ -1,5 +1,8 @@
 #!/bin/sh
 
+[ -d /var/hdd.log ] && echo "ERROR: log2ram still installed. Uninstall first!"
+[ -d /var/hdd.log ] && exit 1
+
 if [ `id -u` -eq 0 ]
 then
   cp log2ram.service /etc/systemd/system/log2ram.service