Well here's the result I get, if u dont wanna download the text file (btw how do create that lil text box?)

BusyBox v1.10.2 (Debian 3:1.10.2.legal-1osso30+0m5) built-in shell (ash)
Enter 'help' for a list of built-in commands.

~ $ root


BusyBox v1.10.2 (Debian 3:1.10.2.legal-1osso30+0m5) built-in shell (ash)
Enter 'help' for a list of built-in commands.

?:~# tracker-register-mimetype -c Videos -d video/x-matroska
Found 154 pids...
Found process ID 3756 for 'trackerd'
Terminated process 3756
Found process ID 3758 for 'tracker-indexer'
Terminated process 3758

touch /home/user/MyDocs/.videos/Never Back Down (2008) 720p.mkv
tracker-update-ontology -c Videos -d video/x-matroska
Tracker status is 'Initializing'
?:~#