postgresql pg_dumpall restore one database My environment:

# cat /etc/redhat-release 
Red Hat Enterprise Linux Server release 7.3 (Maipo)
# rpm -q postgresql
postgresql-9.2.18-1.el7.x86_64
# 


I used following PostgreSQL: Documentation: 9.6: pg_dumpall to take dump all databases


  $ pg_dumpall > db.out


from what I understand, following will restore all databases:


  $ psql -f db.out postgres


my goal is, I need to restore just a one (single) database from that entire dump, how does one accomplish this task?
Your dump is in SQL format. Just open your db.out file remove what's for other databases.