dropuser [options] [username]
Specifies the name of the PostgreSQL user to be removed. This name must exist in the PostgreSQL installation. You will be prompted for a name if none is specified on the command line.
Echo the queries that createdb generates and sends to the backend.
Specifies the hostname of the machine on which the postmaster is running. If host begins with a slash, it is used as the directory for the UNIX domain socket.
Prompt for confirmation before actually removing the user.
Specifies the Internet TCP/IP port or local UNIX domain socket file extension on which the postmaster is listening for connections.
Do not display a response.
The options -h, -p, and -e, are passed on literally to psql. The psql options -U and -W are available as well, but they can be confusing in this context.
dropuser removes an existing PostgreSQL user. Only users with usesuper set in the pg_shadow table can destroy PostgreSQL users.
dropuser is a shell script wrapper around the SQL command DROP USER via the PostgreSQL interactive terminal psql. Thus, there is nothing special about removing users via this or other methods. This means that the psql must be found by the script and that a database server is running at the targeted host. Also, any default settings and environment variables available to psql and the libpq front-end library do apply.
To remove user joe from the default database server:
$ dropuser joe DROP USER |
To remove user joe using the postmaster on host eden, port 5000, with verification and a peek at the underlying query:
$ dropuser -p 5000 -h eden -i -e joe User "joe" and any owned databases will be permanently deleted. Are you sure? (y/n) y DROP USER "joe" DROP USER |