createlang [ ''connection-options''...? --list | -l dbname
createlang accepts the following command line arguments:
Specifies the name of the procedural programming language to be defined.
-d, --dbname dbname
Specifies to which database the language should be added. The default is to use the database with the same name as the current system user.
Displays SQL commands as they are executed.
Shows a list of already installed languages in the target database (which must be specified).
Specifies the directory in which the language interpreter is to be found. The directory is normally found automatically; this option is primarily for debugging purposes.
createlang also accepts the following command line arguments for connection parameters:
-h, --host host
Specifies the host name of the machine on which the server is running. If host begins with a slash, it is used as the directory for the Unix domain socket.
-p, --port port
Specifies the Internet TCP/IP port or local Unix domain socket file extension on which the server is listening for connections.
-U, --username username
User name to connect as
Force password prompt.
createlang is a utility for adding a new programming language to a PostgreSQL database. createlang can handle all the languages supplied in the default PostgreSQL distribution, but not languages provided by other parties.
Use droplang(1) to remove a language.
To install pltcl into the database template1: