PostgreSQL

pg_dump -C -h IP_DO_SERVIDOR -U USUARIO_DO_DB DB_NAME > bkp.sql

alterando a senha

# su - postgres
$ psql postgres
postgres=# alter user postgres with encrypted password '123456';
postgres=# \q

instalando no openSUSE

zypper install -y postgresql postgresql-server
rcpostgresql start
su - postgres
psql
postgres=# ALTER USER postgres WITH PASSWORD 'postgres';
postgres=# \q
sed -i '82s/ident/trust/g'  /var/lib/pgsql/data/pg_hba.conf
rcpostgresql restart

dump

pg_dump -h localhost -U noosfero noosfero > noosfero2.sql