installin postgresql-contrib

[Alexei Chetroi <debian@lexa.uniflux-line.net>]

 Hi All,

 I want to add some function to postgres database from
postgresql-contrib package (some encryption functions). Packages install
normally, but when I'm trying to add functions to database it complains:

[lex.lexa]$ psql mf </usr/lib/postgresql/contrib/pgcrypto.sql 
SET
SET
ERROR:  c: permission denied
ERROR:  c: permission denied
ERROR:  c: permission denied
ERROR:  c: permission denied
ERROR:  c: permission denied
ERROR:  c: permission denied
ERROR:  c: permission denied
ERROR:  c: permission denied
ERROR:  c: permission denied
ERROR:  c: permission denied
ERROR:  c: permission denied
ERROR:  c: permission denied
ERROR:  c: permission denied
ERROR:  c: permission denied

I don't have much experience with postgresql so what am I doing wrong?

 Regards