psql:tldr:afdb1
psql: Connect to the database on given server host running on given port with given username, without a password prompt.
$ psql -h ${host} -p ${port} -U ${username} ${database}
try on your machine
This command is used to connect to a PostgreSQL database using the psql command-line utility. Here's the breakdown of the command and its arguments:
psql: The command itself, which is used to start the psql utility.-h ${host}: Specifies the host (server) where the PostgreSQL database is running.${host}is a placeholder for the actual host name or IP address. For example,-h localhostor-h 192.168.1.100.-p ${port}: Specifies the port number on which the PostgreSQL database is listening for connections.${port}is a placeholder for the actual port number. For example,-p 5432.-U ${username}: Specifies the username to connect to the database.${username}is a placeholder for the actual username.${database}: Specifies the name of the database you want to connect to.${database}is a placeholder for the actual database name.
To use this command, you need to replace the placeholders ${host}, ${port}, ${username}, and ${database} with the appropriate values for your database connection. For example, the following command will connect to a database named "mydatabase" on the localhost using the default port (5432) and the username "myuser":
psql -h localhost -p 5432 -U myuser mydatabase
This explanation was created by an AI. In most cases those are correct. But please always be careful and
never run a command you are not sure if it is safe.