Source several files at once with psql

I want to execute several sql scripts sequentially with psql as a single transaction to set up my database schema. What is the best way to do this? In the past I know I had a master script that I ran psql against that included the other files however I don't remember the syntax of this script.

Your script could look like this:

BEGIN;
\i file1.sql
\i file2.sql
COMMIT;

Or you could do something like this:

cat file1.sql file2.sql | psql -1 -f -

StackExchange Database Administrators Q#3334, answer score: 40