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dropuser
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dropuser

dropuser — remove aPostgreSQL user account

Synopsis

dropuser [connection-option...] [option...] [username]

Description

dropuser removes an existingPostgreSQL user. Only superusers and users with theCREATEROLE privilege can removePostgreSQL users. (To remove a superuser, you must yourself be a superuser.)

dropuser is a wrapper around theSQL command DROP ROLE. There is no effective difference between dropping users via this utility and via other methods for accessing the server.

Options

dropuser accepts the following command-line arguments:

username: Specifies the name of thePostgreSQL user to be removed. You will be prompted for a name if none is specified on the command line and the-i/--interactive option is used.
-e --echo: Echo the commands thatdropuser generates and sends to the server.
-i --interactive: Prompt for confirmation before actually removing the user, and prompt for the user name if none is specified on the command line.
-V --version: Print thedropuser version and exit.
--if-exists: Do not throw an error if the user does not exist. A notice is issued in this case.
-? --help: Show help aboutdropuser command line arguments, and exit.

dropuser also accepts the following command-line arguments for connection parameters:

-hhost --host=host

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.

-pport --port=port

Specifies the TCP port or local Unix domain socket file extension on which the server is listening for connections.

-Uusername --username=username

User name to connect as (not the user name to drop).

-w --no-password

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.

-W --password

Forcedropuser to prompt for a password before connecting to a database.

This option is never essential, sincedropuser 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 attempt.

Environment

PGHOST PGPORT PGUSER: Default connection parameters

This utility, like most otherPostgreSQL utilities, also uses the environment variables supported bylibpq (seeSection 34.14).

Diagnostics

In case of difficulty, seeDROP ROLE andpsql 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 thelibpq front-end library will apply.

Examples

To remove userjoe from the default database server:

$dropuser joe

To remove userjoe using the server on hosteden, port 5000, with verification and a peek at the underlying command:

$dropuser -p 5000 -h eden -i -e joeRole "joe" will be permanently removed.Are you sure? (y/n)yDROP ROLE joe;