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+<!--
+doc/src/sgml/ref/dropuser.sgml
+PostgreSQL documentation
+-->
+
+<refentry id="app-dropuser">
+ <indexterm zone="app-dropuser">
+ <primary>dropuser</primary>
+ </indexterm>
+
+ <refmeta>
+ <refentrytitle><application>dropuser</application></refentrytitle>
+ <manvolnum>1</manvolnum>
+ <refmiscinfo>Application</refmiscinfo>
+ </refmeta>
+
+ <refnamediv>
+ <refname>dropuser</refname>
+ <refpurpose>remove a <productname>PostgreSQL</productname> user account</refpurpose>
+ </refnamediv>
+
+ <refsynopsisdiv>
+ <cmdsynopsis>
+ <command>dropuser</command>
+ <arg rep="repeat"><replaceable>connection-option</replaceable></arg>
+ <arg rep="repeat"><replaceable>option</replaceable></arg>
+ <arg choice="opt"><replaceable>username</replaceable></arg>
+ </cmdsynopsis>
+ </refsynopsisdiv>
+
+
+ <refsect1>
+ <title>Description</title>
+
+ <para>
+ <application>dropuser</application> removes an existing
+ <productname>PostgreSQL</productname> user.
+ Only superusers and users with the <literal>CREATEROLE</literal> privilege can
+ remove <productname>PostgreSQL</productname> users. (To remove a
+ superuser, you must yourself be a superuser.)
+ </para>
+
+ <para>
+ <application>dropuser</application> is a wrapper around the
+ <acronym>SQL</acronym> command <link linkend="sql-droprole"><command>DROP ROLE</command></link>.
+ There is no effective difference between dropping users via
+ this utility and via other methods for accessing the server.
+ </para>
+
+ </refsect1>
+
+
+ <refsect1>
+ <title>Options</title>
+
+ <para>
+ <application>dropuser</application> accepts the following command-line arguments:
+
+ <variablelist>
+ <varlistentry>
+ <term><replaceable class="parameter">username</replaceable></term>
+ <listitem>
+ <para>
+ Specifies the name of the <productname>PostgreSQL</productname> user to be removed.
+ You will be prompted for a name if none is specified on the command
+ line and the <option>-i</option>/<option>--interactive</option> option
+ is used.
+ </para>
+ </listitem>
+ </varlistentry>
+
+ <varlistentry>
+ <term><option>-e</option></term>
+ <term><option>--echo</option></term>
+ <listitem>
+ <para>
+ Echo the commands that <application>dropuser</application> generates
+ and sends to the server.
+ </para>
+ </listitem>
+ </varlistentry>
+
+ <varlistentry>
+ <term><option>-i</option></term>
+ <term><option>--interactive</option></term>
+ <listitem>
+ <para>
+ Prompt for confirmation before actually removing the user, and prompt
+ for the user name if none is specified on the command line.
+ </para>
+ </listitem>
+ </varlistentry>
+
+ <varlistentry>
+ <term><option>-V</option></term>
+ <term><option>--version</option></term>
+ <listitem>
+ <para>
+ Print the <application>dropuser</application> version and exit.
+ </para>
+ </listitem>
+ </varlistentry>
+
+ <varlistentry>
+ <term><option>--if-exists</option></term>
+ <listitem>
+ <para>
+ Do not throw an error if the user does not exist. A notice is
+ issued in this case.
+ </para>
+ </listitem>
+ </varlistentry>
+
+ <varlistentry>
+ <term><option>-?</option></term>
+ <term><option>--help</option></term>
+ <listitem>
+ <para>
+ Show help about <application>dropuser</application> command line
+ arguments, and exit.
+ </para>
+ </listitem>
+ </varlistentry>
+
+ </variablelist>
+ </para>
+
+ <para>
+ <application>dropuser</application> also accepts the following
+ command-line arguments for connection parameters:
+
+ <variablelist>
+ <varlistentry>
+ <term><option>-h <replaceable class="parameter">host</replaceable></option></term>
+ <term><option>--host=<replaceable class="parameter">host</replaceable></option></term>
+ <listitem>
+ <para>
+ 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.
+ </para>
+ </listitem>
+ </varlistentry>
+
+ <varlistentry>
+ <term><option>-p <replaceable class="parameter">port</replaceable></option></term>
+ <term><option>--port=<replaceable class="parameter">port</replaceable></option></term>
+ <listitem>
+ <para>
+ Specifies the TCP port or local Unix domain socket file
+ extension on which the server
+ is listening for connections.
+ </para>
+ </listitem>
+ </varlistentry>
+
+ <varlistentry>
+ <term><option>-U <replaceable class="parameter">username</replaceable></option></term>
+ <term><option>--username=<replaceable class="parameter">username</replaceable></option></term>
+ <listitem>
+ <para>
+ User name to connect as (not the user name to drop).
+ </para>
+ </listitem>
+ </varlistentry>
+
+ <varlistentry>
+ <term><option>-w</option></term>
+ <term><option>--no-password</option></term>
+ <listitem>
+ <para>
+ Never issue a password prompt. If the server requires
+ password authentication and a password is not available by
+ other means such as a <filename>.pgpass</filename> 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.
+ </para>
+ </listitem>
+ </varlistentry>
+
+ <varlistentry>
+ <term><option>-W</option></term>
+ <term><option>--password</option></term>
+ <listitem>
+ <para>
+ Force <application>dropuser</application> to prompt for a
+ password before connecting to a database.
+ </para>
+
+ <para>
+ This option is never essential, since
+ <application>dropuser</application> will automatically prompt
+ for a password if the server demands password authentication.
+ However, <application>dropuser</application> will waste a
+ connection attempt finding out that the server wants a password.
+ In some cases it is worth typing <option>-W</option> to avoid the extra
+ connection attempt.
+ </para>
+ </listitem>
+ </varlistentry>
+ </variablelist>
+ </para>
+ </refsect1>
+
+
+ <refsect1>
+ <title>Environment</title>
+
+ <variablelist>
+ <varlistentry>
+ <term><envar>PGHOST</envar></term>
+ <term><envar>PGPORT</envar></term>
+ <term><envar>PGUSER</envar></term>
+
+ <listitem>
+ <para>
+ Default connection parameters
+ </para>
+ </listitem>
+ </varlistentry>
+
+ <varlistentry>
+ <term><envar>PG_COLOR</envar></term>
+ <listitem>
+ <para>
+ Specifies whether to use color in diagnostic messages. Possible values
+ are <literal>always</literal>, <literal>auto</literal> and
+ <literal>never</literal>.
+ </para>
+ </listitem>
+ </varlistentry>
+ </variablelist>
+
+ <para>
+ This utility, like most other <productname>PostgreSQL</productname> utilities,
+ also uses the environment variables supported by <application>libpq</application>
+ (see <xref linkend="libpq-envars"/>).
+ </para>
+
+ </refsect1>
+
+
+ <refsect1>
+ <title>Diagnostics</title>
+
+ <para>
+ In case of difficulty, see <xref linkend="sql-droprole"/>
+ and <xref linkend="app-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 <application>libpq</application> front-end
+ library will apply.
+ </para>
+
+ </refsect1>
+
+
+ <refsect1>
+ <title>Examples</title>
+
+ <para>
+ To remove user <literal>joe</literal> from the default database
+ server:
+<screen>
+<prompt>$ </prompt><userinput>dropuser joe</userinput>
+</screen>
+ </para>
+
+ <para>
+ To remove user <literal>joe</literal> using the server on host
+ <literal>eden</literal>, port 5000, with verification and a peek at the underlying
+ command:
+<screen>
+<prompt>$ </prompt><userinput>dropuser -p 5000 -h eden -i -e joe</userinput>
+<computeroutput>Role "joe" will be permanently removed.
+Are you sure? (y/n) </computeroutput><userinput>y</userinput>
+<computeroutput>DROP ROLE joe;</computeroutput>
+</screen></para>
+ </refsect1>
+
+
+ <refsect1>
+ <title>See Also</title>
+
+ <simplelist type="inline">
+ <member><xref linkend="app-createuser"/></member>
+ <member><xref linkend="sql-droprole"/></member>
+ </simplelist>
+ </refsect1>
+
+</refentry>