dropuser — remove a PostgreSQL user account
dropuser removes an
existing PostgreSQL user. Only
superusers and users with the
CREATEROLE privilege can remove PostgreSQL users. (To remove a superuser,
you must yourself be a superuser.)
dropuser is a wrapper around the SQL command DROP ROLE. There is no effective difference between dropping users via this utility and via other methods for accessing the server.
dropuser accepts the following command-line arguments:
Specifies the name of the PostgreSQL user to be removed. You
will be prompted for a name if none is specified on the
command line and the
--interactive option is used.
Echo the commands that dropuser generates and sends to the server.
Prompt for confirmation before actually removing the user, and prompt for the user name if none is specified on the command line.
Print the dropuser version and exit.
Do not throw an error if the user does not exist. A notice is issued in this case.
Show help about dropuser command line arguments, and exit.
dropuser also accepts the following command-line arguments for connection parameters:
Specifies the host name of the machine on which the server is running. If the value begins with a slash, it is used as the directory for the Unix domain socket.
Specifies the TCP port or local Unix domain socket file extension on which the server is listening for connections.
User name to connect as (not the user name to drop).
Never issue a password prompt. If the server requires
password authentication and a password is not available
by other means such as a
.pgpass file, the connection attempt
will fail. This option can be useful in batch jobs and
scripts where no user is present to enter a password.
Force dropuser to prompt for a password before connecting to a database.
This option is never essential, since dropuser will automatically prompt
for a password if the server demands password
authentication. However, dropuser will waste a connection
attempt finding out that the server wants a password. In
some cases it is worth typing
-W to avoid the extra connection
Default connection parameters
This utility, like most other PostgreSQL utilities, also uses the environment variables supported by libpq (see Section 34.14).
In case of difficulty, see DROP ROLE and psql for discussions of potential problems and error messages. The database server must be running at the targeted host. Also, any default connection settings and environment variables used by the libpq front-end library will apply.
To remove user
joe from the
default database server:
To remove user
joe using the
server on host
eden, port 5000,
with verification and a peek at the underlying command:
dropuser -p 5000 -h eden -i -e joe
Role "joe" will be permanently removed. Are you sure? (y/n)
DROP ROLE joe;
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