HP 3000 Manuals HP 3000 Manuals
Beginning and Ending a Computer Work Session
Before you can do any work on your system, you must begin communicating
with the computer. This is called logging on.
When you have finished your work on the computer, you end your
communication with the computer by logging off.
Before You Start
Before you start this tutorial, you will need
* logon identification for your HP 3000 Series 9X8LX
* account manager (AM) capabilities
* set up a PRACTICE account using the MKACCT command described in
chapter 2, in the section Creating a Practice Account, OR use your
USERNAME.ACCT in place of USER1.PRACTICE.
Getting Started
If you are the system administrator, you have probably set up a PRACTICE
account Use this account to log on and perform the tasks that follow.
To log on to your MPE/iX system, follow these steps:
1. Type HELLO followed by the logon identity:
MPE/iX: HELLO USER1.PRACTICE Return
2. If you are prompted for a password, type it and press Return. For
security reasons, what you enter does not appear on the screen.
What appears on your screen is the system prompt. The system
prompt is a colon (:), unless a programmer has changed it for you.
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| : |
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The colon prompt (:) tells you that you have successfully logged
on. You have started a session with the computer.
Next to the prompt is a cursor that can be a small line (_) or a small
square of light. The cursor shows you where the next letter or number
that you enter is going to appear on the terminal screen.
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To log off
The log off command is BYE. You can practice logging off and ending your
session with the system if the terminal that you are using is not also
the console. Enter:
:BYE Return
A goodbye message appears when you log off. For example:
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| CPU=1. CONNECT=1. TUE, JAN 15, 1993, 3:38 PM. |
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The words in the message mean this:
CPU Central processing unit. This part of the computer system
interprets and executes instructions and contains all or
part of the internal storage.
CONNECT Tells you how many minutes that your session was connected
to the system or how long you were logged on to the system.
The current date and logoff time are also provided.
To use passwords
When you log on to your system, the computer may prompt you to enter
passwords:
* an account password
* a user password
* a group password
You may be prompted to provide only one of these, two of them, or all
three.
In each case where a password is required, your system gives you three
chances to enter the right password. After a third incorrect entry, you
see an error message. When this happens, enter the HELLO command again.
An incorrect entry of a password would look like this on the screen:
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| MPE/IX: HELLO LARRY.SMITH |
| ENTER ACCOUNT PASSWORD: |
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| ENTER ACCOUNT PASSWORD: |
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| ENTER ACCOUNT PASSWORD: |
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| INCORRECT PASSWORD. (CIERR 1441) |
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| MPE/iX: |
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The message itself, INCORRECT PASSWORD, describes the problem. The error
message number (CIERR 1441) follows the description. You will see other
messages as you perform tasks.
To enter commands
Commands let you communicate with the system in a similar way that words
and language let you communicate with other people. To use the commands,
you must be logged on to the system. Once again, log on to the PRACTICE
account.
Executing an MPE/iX command requires only two steps:
1. Type the name of the command and any other necessary words at the
system prompt.
2. Press the Return key.
In the following exercise, you will enter commands that give you
information from the computer.
Using the Help Facility
You will find the HELP command to be a very useful command. The HELP
command provides a list of categories that you can get help on. Enter
the following command now:
:HELP Return
The screen displays:
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| This is the MPE/iX Help Facility |
| -------------------------------------------------- |
| Enter SUMMARY, CLASS, a command name, or HELPSTUDY * |
| -------------------------------------------------- |
| SUMMARY....A summary MPE/iX commands & HELP'' |
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| CLASS...... Classes of Commands |
| SESSIONS, JOBS, FILES, SUBSYSTEMS, ETC. |
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| < command name >..... . COMMAND entries, by name |
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| < command name >< keyword > COMMAND entry with keyword |
| PARMS, OPERATION, EXAMPLE |
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| HELPSTUDY......... A beginner's introduction to |
| Help |
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| EXIT............To leave the Help facility. |
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| You can use UPPERCASE or lowercase. |
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| >>>>>>>> The name of this screen is HELPMENU <<<<<<<< |
| > |
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The Help Facility has its own prompt, the "greater than" symbol:
>
To exit HELP
When you are using the Help Facility, you will see the Help prompt when
the scrolling has stopped.
To get out of Help, enter EXIT:
>EXIT Return
The standard prompt (:) should now appear.
If you would like to learn more about the Help Facility, use the
HELPSTUDY command.
To get the current time and date
The SHOWTIME command allows you to see the time and date on your terminal
screen.
At the system prompt, type SHOWTIME:
:SHOWTIME Return
On the screen, you should see something like this:
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| FRI, JAN 30, 1993, 3:58 PM |
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If you encounter an error message, retype the command, or refer to "Using
the Help Facility" in the above section.
To change the current time and date
The SETCLOCK command is used to change the system time or to change the
system's time zone. The following example illustrates setting the system
time by providing a date and time:
:SETCLOCK DATE=07/04/1993; TIME=15.00 Return
The following example illustrates a time correction that advances the
system time by one hour (3600 seconds):
:SETCLOCK CORRECTION= +3600 Return
or
:SETCLOCK CORRECTION= 3600 Return
For more information about the :SETCLOCK command, refer to the Commands
Reference (B3818-90011).
To get information about your session
The SHOWME command displays information about your session. It also
displays any special logon messages, such as a Welcome message.
To see the group and account that you are in, use the SHOWME command.
Enter:
The screen displays information about your session:
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| USER: #S41,USER1.PRACTICE,PUB (NOT IN BREAK) |
| RELEASE: B.31.00 MPE/IX HP31900 B.09.70 USER VERSION: |
| B.31.00 |
| CURRENT: MON, APR 28, 1993, 9:59 AM |
| LOGON: MON, APR 28, 1993, 9:59 AM |
| CPU SECONDS: 1 CONNECT MINUTES: 1 |
| $STDIN LDEV: 104 $STDLIST LDEV: 104 |
| :_ |
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The SHOWME display provides valuable information. Locate each of the
following:
USER This identifies you on the computer in two ways:
* By session number: in this example, #S41 (session
number 41). This number is assigned to you by the
system when you log on.
* By logon identity: in this example,
USER1.PRACTICE,PUB. (On the screen, it would show the
way you logged on.)
MPE VERSION Tells you which version of the operating system that you are
using.
LOGON Shows the day and time that you logged on.
CONNECT MINUTES Shows how many minutes have passed since you logged on.
$STDIN LDEV This logical device number (here it is 104, a number
assigned by the computer) tells your system which terminal
you are using in your session.
$STDLIST LDEV This logical device number (here it is 104, a number
assigned by the computer) tells your system where to send
your output. It is the default.
The (NOT IN BREAK) message (on the top line) means that you are not in
the middle of running a program. You have temporarily halted its
execution.
Your session number, logon identity, and LDEV number are important. Be
sure to record this information.
To get information about jobs and sessions
The SHOWJOB command displays the identities of other users, jobs, and
sessions currently logged on to the computer.
To see information about jobs and sessions, enter the following command
now:
:SHOWJOB Return
Your screen will display a list of columns like the following, although
your screen will be unique to your system:
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| JOBNUM STATE INPRI JIN JLIST INTRODUCED JOB NAME |
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| #S110 EXEC QUIET 101 101 TUES 9:00A USER1.PRACTICE |
| #S114 EXEC 103 103 TUES 2:05P LARRY.SMITH |
| #S115 EXEC 105 105 TUES 2:45P IRENE.JONES |
| #J15 EXEC 109 LP TUES 4:00P PAY.ACCNTNG |
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| 4 JOBS |
| 0 INTRO |
| 0 WAIT; INCL 0 DEFERRED |
| 4 EXEC; INCL 3 SESSIONS |
| 0 SUSP |
| JOBFENCE=7; JLIMIT=6; SLIMIT=60 |
| : |
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In the left column of the above example, all but one job number begins
with an #S. The S indicates session. A session begins the moment that
you log on (HELLO) and ends when you log off (BYE). When you work in a
session, you will see the results of your instructions as they execute.
The remaining job number begins with
a #J (J15). You use a job when you want the computer to carry out your
instructions on its own. You do not have to be logged on when the job
starts, or when it ends. The job prints out a report for you, telling
you what it did and whether it succeeded in doing what you wanted it to
do. Running a job is often called batch processing or a batch job.
To correct an error
What if you make a mistake while entering a command? There are various
methods of correcting these mistakes. Choose the method that is most
convenient. You can correct your mistake by
* retyping the command
* backspacing over the error
* using the REDO command
Try one of the above methods. Make a mistake. Enter:
:SHOWHOB Return
Your screen should look like this:
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| SHOWHOB |
| UNKNOWN COMMAND NAME. (CIERR 975) |
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The computer does not recognize the command, so it displays an error
message. The parenthetical phrase (CIERR 975) identifies this error
message.
Try retyping the SHOWJOB command
now. Enter:
:SHOWJOB Return
You now see the SHOWJOB display:
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| JOBNUM STATE INPRI JIN JLIST INTRODUCED JOB NAME |
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| #S110 EXEC QUIET 101 101 TUES 9:00A USER1.PRACTICE |
| #S114 EXEC 103 103 TUES 2:05P LARRY.SMITH |
| #S115 EXEC 105 105 TUES 2:45P IRENE.JONES |
| #J15 EXEC 109 LP TUES 4:00P PAY.ACCNTNG |
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