Could you teach me, How can we specify password when using psql.... - Mailing list pgsql-general

hi..

when using oracle sqlplus..  we can specify   password.
$ sqlplus system/manager

Could you teach me, How can we specify password when using  psql....

$ psql -p 5432 -h rac2 -d mydb -U hsnoh  
Password for user hsnoh:

Thanks..