How do I reset "open with"?

[ToddAndMargo]

On 10/02/2015 03:38 PM, Sébastien wrote:
> le 2015-10-02, ToddAndMargo écrivit:
>> One of the worst offenders is "rdf".  It has 16 things assigned to it.
>> It should only have one.  A few are stale; most are just wrong.
>>
>> /home/tony/.local/share/applications/find . -exec grep -l rdf {} \;
>> 2>&1 | grep -v "Is a dir"
>>
>> Showed no .desktop had an "rdf" entry.
>
> Try another search in /usr/share/applications
>

find /usr/share/applications -exec grep -li rdf {} \; 2>&1 | grep -v "Is 
a dir"

nothing