[NOVICE] COPY from temp table to main table insted of INSERT INTO

I tend to do mass inserts to my database, but INSERT INTO is taking quite a while for 100k values.

What is the syntax for using the COPY command to copy a well formatted temp table to the “end” of the primary table?  I am having trouble understanding https://www.postgresql.org/docs/9.5/static/sql-copy.html.

Thanks,

Stephen