how to load a sql-file????

hi,
maybe this is somewhere in the docs but I couldn't find
it.
I am a beginner to postgresql and do not know much till now.
I have bought a book on SQL and now I want to
import the sample databases into postgresql
they are provided as *.sql.

in MySQL I can type something like in Bash on my linux box:

$ mysql -u root -p < file.sql

then the file file.sql is read.

can you tell me how to do this with postgresql???
thanks a lot.

markus


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Markus Jais
http://www.mjais.de
info@mjais.de
The road goes ever on and on - Bilbo Baggins