CREATEUSER(1)						  PostgreSQL Client Applications					     CREATEUSER(1)

NAME

       createuser - define a new PostgreSQL user account

SYNOPSIS

       createuser [ option... ]  [ username ]

DESCRIPTION

       createuser  creates  a new PostgreSQL user (or more precisely, a role).	Only superusers and users with CREATEROLE privilege can create new
       users, so createuser must be invoked by someone who can connect as a superuser or a user with CREATEROLE privilege.

       If you wish to create a new superuser, you must connect as a superuser, not merely with CREATEROLE privilege.  Being  a	superuser  implies
       the ability to bypass all access permission checks within the database, so superuserdom should not be granted lightly.

       createuser  is  a wrapper around the SQL command CREATE ROLE [create_role(7)].  There is no effective difference between creating users via
       this utility and via other methods for accessing the server.

OPTIONS

       createuser accepts the following command-line arguments:

       username
	      Specifies the name of the PostgreSQL user to be created.	This name must be different from all existing  roles  in  this	PostgreSQL
	      installation.

       -s

       --superuser
	      The new user will be a superuser.

       -S

       --no-superuser
	      The new user will not be a superuser.  This is the default.

       -d

       --createdb
	      The new user will be allowed to create databases.

       -D

       --no-createdb
	      The new user will not be allowed to create databases.  This is the default.

       -r

       --createrole
	      The new user will be allowed to create new roles (that is, this user will have CREATEROLE privilege).

       -R

       --no-createrole
	      The new user will not be allowed to create new roles.  This is the default.

       -l

       --login
	      The  new	user  will  be allowed to log in (that is, the user name can be used as the initial session user identifier).  This is the
	      default.

       -L

       --no-login
	      The new user will not be allowed to log in.  (A role without login privilege is still useful as a means of managing database permis-
	      sions.)

       -i

       --inherit
	      The new role will automatically inherit privileges of roles it is a member of.  This is the default.

       -I

       --no-inherit
	      The new role will not automatically inherit privileges of roles it is a member of.

       -c number

       --connection-limit number
	      Set a maximum number of connections for the new user.  The default is to set no limit.

       -P

       --pwprompt
	      If  given,  createuser will issue a prompt for the password of the new user. This is not necessary if you do not plan on using pass-
	      word authentication.

       -E

       --encrypted
	      Encrypts the user's password stored in the database. If not specified, the default password behavior is used.

       -N

       --unencrypted
	      Does not encrypt the user's password stored in the database. If not specified, the default password behavior is used.

       -e

       --echo Echo the commands that createuser generates and sends to the server.

       You will be prompted for a name and other missing information if it is not specified on the command line.

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

       -h host

       --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.

       -p port

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

       -U username

       --username username
	      User name to connect as (not the user name to create).

       -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
	      Force createuser to prompt for a password (for connecting to the server, not for the password of the new user).

	      This option is never essential, since createuser will automatically prompt for a password if the server demands password authentica-
	      tion.  However, createuser 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 other PostgreSQL utilities, also uses the environment variables supported by libpq (see in the documentation).

DIAGNOSTICS

       In case of difficulty, see CREATE ROLE [create_role(7)] and psql(1) 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.

EXAMPLES

       To create a user joe on the default database server:

       $ createuser joe
       Shall the new role be a superuser? (y/n) n
       Shall the new role be allowed to create databases? (y/n) n
       Shall the new role be allowed to create more new roles? (y/n) n

       To create the same user joe using the server on host eden, port 5000, avoiding the prompts and taking a look at the underlying command:

       $ createuser -h eden -p 5000 -S -D -R -e joe
       CREATE ROLE joe NOSUPERUSER NOCREATEDB NOCREATEROLE INHERIT LOGIN;

       To create the user joe as a superuser, and assign a password immediately:

       $ createuser -P -s -e joe
       Enter password for new role: xyzzy
       Enter it again: xyzzy
       CREATE ROLE joe PASSWORD 'md5b5f5ba1a423792b526f799ae4eb3d59e' SUPERUSER CREATEDB CREATEROLE INHERIT LOGIN;

       In  the	above example, the new password isn't actually echoed when typed, but we show what was typed for clarity. As you see, the password
       is encrypted before it is sent to the client. If the option --unencrypted is used, the password will appear in the echoed command (and pos-
       sibly also in the server log and elsewhere), so you don't want to use -e in that case, if anyone else can see your screen.

SEE ALSO

       dropuser(1), CREATE ROLE [create_role(7)]

Application							    2010-05-14							     CREATEUSER(1)