Library /sys$common/syshlp/helplib.hlb  —  TCPIP Services, Remote Commands, User Guidelines
    To use a remote command on your OpenVMS system, remote hosts need
    to know the user name that you want to use on the host. You can
    provide the user name in either of two ways:

    o  Automatically: You do not need to take any action if your
       user name is the same on the remote host as it is on the local
       host. The remote commands automatically supply your local user
       name as the requested user name on the remote system.

    o  Using the /USER_NAME qualifier: Specify the user name with the
       /USER_NAME qualifier if your user name is:

       -  Different on the remote host

       -  In mixed case (only for remote hosts that support case-
          sensitive user names)

       -  The same on the remote host but you want to access the
          remote host using another user name

       By default, the R commands send all user names in lowercase
       letters. If you access a host that supports case-sensitive
       user names, and the user name you specify has uppercase
       letters, you can use the /NOLOWERCASE qualifier to maintain
       these letters as uppercase, or you can specify the /USER_NAME
       qualifier and enclose the user name within quotation marks.

    The remote host must also know your password or know you as
    a trusted user on your local system through a proxy or by
    authentication.

    o  Accessing remote hosts by providing your password:

       -  Certain systems have case-sensitive passwords. To send your
          lowercase or mixed-case password to these hosts, enclose
          it within quotation marks ( " " ). On systems that are not
          case sensitive, you do not need to enclose your password
          within quotation marks.

       -  You can specify the password on the command line, as
          follows:

          $ RSH WOODS /PASSWORD="Downy" LS

          You can specify the password when the remote system
          prompts, as follows:

          $ RSH WOODS /PASSWORD DIR
          REXEC password:        (password not echoed)

    o  Accessing remote hosts as a trusted user:

       Most systems use authentication files or proxy accounts that
       allow trusted users on trusted hosts to access the system
       by specifying only the user name they want to use. To access
       a host without specifying the corresponding password, your
       originating host and user name must have an entry in these
       authentication files.

       The authentication file entries contain your originating user
       name. The R commands convert your originating user name to
       lowercase unless you use the /NOLOWERCASE qualifier. You may
       have to contact the system manager of the remote system to
       determine whether the system is case sensitive and, if so,
       what case is used in the authentication files.

                                  NOTES

       o  To use the REXEC feature, you must always use the
          /PASSWORD qualifier.

       o  The RLOGIN command does not recognize the /PASSWORD
          qualifier. If you are a trusted user, you are
          automatically logged in to the remote system.

       o  If you are not a trusted user, the remote host (REXEC)
          prompts you to enter a user name and password on the
          remote system.
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