MPE/iX Commands Reference Manual (32650-90877)

Chapter 7 237
Command List V
Commands HEADOFF thru LISTF
The session number assigned by MPE/iX uniquely identifies your session to MPE/iX and to
other users. MPE/iX assigns such numbers to sessions in sequential order as they are
logged on. If you are on a modem and do not log on within the system-configured time, the
line is dropped. You must redial and press
Return again. If you are already logged on and
you issue the HELLO command, you will be logged off your current session and logged on to
a new session.
In certain instances, you may be required to furnish information in addition to the user
and account names in your HELLO command. This information includes:
• Group name
• One or more passwords
• Terminal type code
Use
This command may be issued from a session. It may not be used from a job, program, or in
BREAK. Pressing
Break does not abort the execution of this command, but may
prematurely terminate the printing of the welcome message or the execution of any logon
UDCs. If you are already in a session, HELLO terminates that session before beginning a
new one.
Group Name
The group you select at logon for your local file domain is known as your logon group. If
your account manager has associated a home group with your
username , and if you want
this group as a logon group, you need not specify it. MPE/iX automatically assigns the
home group as your logon group when you log on. But if you want to use some other group
as your logon group, you must specify that group's name in your logon command in this
way:
MPE iX:HELLO USER.TECHPUBS,MYGROUP
If your user name is not related to a home group, you must enter a group name in your
HELLO command, or your logon attempt is rejected.
Once you log on, if the normal (default) file security provisions of MPE/iX are in force, you
have unlimited access to all files in your logon and home groups. Furthermore, you can
read files and execute programs stored in the PUB (public) group of your account and the
PUB (public) group of the SYS (system) account. You cannot, however, access any other files
in any way. Further information about files and file security can be found in the Accessing
Files Programmer's Guide (32650-60010).
Passwords
To enhance the security of an account, and to prevent unauthorized accumulation of
charges against the account, the system manager may assign a password. Similarly, an
account manager may associate passwords with the user names and groups belonging to
his account. If you are using an account, user name, or group (other than your home group)
that has a password, you must furnish that password when you log on. Include the
password after the name of the protected entity, separated from that name by a slash mark
(/). (In MPE/iX, the slash denotes security.)