Updated Common Problems (markdown)

Common-Problems.md

@@ -3,3 +3,9 @@
 
 ### Mapped Network Drives vs UNC Paths ###
 * Using mapped network drives generally doesn't work very well, especially when Radarr is configured to run as a service. The better way to set shares up is using UNC paths. So instead of `X:\Movies` use `\\Server\Movies\`.
+
+### Permissions ###
+* Radarr will need to movie files away from where the downloader puts them into the final location. This means that Radarr will need to be able to read and write from the source and to the destination. On Linux, where best practices have services running as their own user, this will probably mean using a shared group and setting folder permissions to `775` and files to `664` both in your downloader and Radarr. In umask notation, that would be `002`.
+
+### Movies Not in Folders ###
+* Currently, Radarr requires that each movie be in a folder. The format should be something like `./Movie Title (Year)/` to facilitate correct identification during import. Further, having the quality in the filename is also useful like `Movie Title (Year) [Quality-Resolution].ext`. That way, during import the correct quality will be matched. A useful tool for making these changes to your collection is [filebot](http://www.filebot.net/#download) which has paid version in both the Apple and Windows stores, but can be found for free on their [SourceForge](https://sourceforge.net/projects/filebot/files/latest/download) site. It has both a GUI and CLI, so you can use whatever you're comfortable with.