Select into OUTFILE -- how do you append or delete

I have a query that will run and create the file right, however now I need to make some edits. First I need a version that will append to an existing file.... and another that will delete the file if it exists.  

so say I this was the query I was using what would it look like in the above situations...

SELECT insertstatement INTO OUTFILE 'C:\\MW2MP\\conversion.sql' from sqlinserts;
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You can't from inside the mysql client.  You could from the command line, using redirection.
mysql [options] -e "SELECT insertstaement FROM sqlinserts" > fileToOverWrite
mysql [options] -e "SELECT insertstaement FROM sqlinserts" >> fileToAppend

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MySQL Server

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