[Q] sync local folders external1 and external2 android
I have an android set top device and want to sync/auto backup a folder on mnt/external1 with a folder on /mnt/external2 or the sdcard1 and sdcard2 either way. I have not found any apps in the app store to manually set synced or backup folders. There are many that sync to cloud drives the closest I could find is titanium media sync but that syncs to an ftp/other type site, not to another local location. I am hoping there is an app that will do this sim-ly and automatically. I currently use a pogoplug running archlinux with rsync but would like to transfer to only using the android box.