How to execute multiple queries using psql command from bash shell?

Question

I need to execute postgresql queries from command line using psql -c command. For every psql command, it opens a new tcp connection to connect to the database server and exe

Answer 1

The --file parameter executes a file's content

psql -U postgres -h  -f "my_file.psql"

All the output will be sent to standard output

http://www.postgresql.org/docs/current/static/app-psql.html