nnection parameter.
     </P
></LI
><LI
><P
>      
      <TT
CLASS="ENVAR"
>PGPASSWORD</TT
> behaves the same as the <A
HREF="libpq-connect.html#LIBPQ-CONNECT-PASSWORD"
>password</A
> connection parameter.
      Use of this environment variable
      is not recommended for security reasons, as some operating systems
      allow non-root users to see process environment variables via
      <SPAN
CLASS="APPLICATION"
>ps</SPAN
>; instead consider using the
      <TT
CLASS="FILENAME"
>~/.pgpass</TT
> file (see