1 line
6.5 KiB
Plaintext
1 line
6.5 KiB
Plaintext
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_____________________________
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/_____________________________\
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/ \
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| Inside Vax/Vms |
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| Using Command Procedures |
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| By |
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| Master Blaster |
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\_____________________________/
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Advanced Telecommunications Inc.
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Note: The following is geared for the more advanvced hacker.
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Part 1: Using Command Procedures.
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----- ------- ----------
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You can use command procedures to automate sequences of
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commands that you use quite often. For example, if you always
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se the DIRECTORY command after you move to a Sub-Directory
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here work files are kept, you can write a simple command
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procedure to issue the SET DEFAULT and DIRECTORY commands for you.
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he following example, GO_DIR.COM, contains two commands:
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$ Set Default [perry.accounts]
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$ directory
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Instead of using each command alone, you can execute GO_DIR.COM
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with the @ command:
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$ @Go_Dir
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his command tells the DCL command interpreter to read the file
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O_DIR.COM and executes the commands in the file. So the command
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nterpreter sets your default directory to[PERRY.ACCOUNTS] and
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sues the DIRECTORY command.
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ote: DCL means Digital Command Language. (sorry)
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Formatting Command Procedures
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---------- ------- ----------
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Use the DCL command CREATE to create and format a command
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rocedure. When you name the command procedure, use the default
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ile type COM. If you use this default, you don't have to use the
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ile type when you execute the procedure with the @ command.
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Command procedures contain DCL commands that you want the DCL
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command intepreter to execute and data lines that are used by
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hese commands. Commands must begin with a dollar sign. You can
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tart the command string just after the dollar sign.
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Data lines do not start with a dollar sign. Data lines are used
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as input data for commands. Data lines are used by the most
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ecently issued command.
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he following examle shows command and data lines in a command
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rocedure.
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$ mail
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SEND
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HOMAS
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Y MEMO
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id you get my memo?
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Show users thomas
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The first line is a command and must start with a "$". The next
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ines are data lines that are used by the mail function; these
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lines must not start with "$".
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Using Multiple Lines for One Command
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----- -------- ----- --- --- -------
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If you are writing a command that includes many qualifers,
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ou can make the command procedure more readable by listing the
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ualifers on seperate lines rather than running them together. To
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o this, use the hyphen as a continuation character. Don't start
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he continued line with "$". For example:
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$ print test.out -
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/after=18:00 -
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/copies=10 -
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/queue=lpb0:
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xecuting Command Procedures
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-------- ------- ----------
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You can execute command procedures in two modes: interactive
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nd batch. In interactive mode, the commands in the command
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rocedure are executing as if you were typing them. You cannot
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xecute any other commands from your computer. In batch mode,
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he system creates a seprate process to run the command
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procedure. After you use a batch job you can continue to use
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e system while it executes.
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xecuting Command Procedures Interactively
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-------- ------- ---------- -------------
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To execute a command procedure interactively, type the "@"
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command followed by the file specifications. If you don't enter
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e entire command specification, the system will use the current
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disk, directory, and file default.
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Changing Command Levels
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-------- ------- ------
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A command level is the DCL level from which you issue
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commands. When you log in and type commands at your Computer,
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u are issuing commands at your level zero. If you execute a
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procedure, the commands in the procedure are executed at command
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evel 1. When the procedure ends and the DCL prompt is on your
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creen, you are back at levil zero.
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A System Login File
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- ------ ----- ----
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If a system login file exists, it is executed before the
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personal file. When the system login file ends, control is
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assed to the personal login file. System and group login files
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low a system manager to make sure certian files are executed
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when a person logs in.
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To make a system login file, you have to have a managers account,
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you use the name SYS$SYLOGIN to make the login file.
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Personal Login Files
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------- ----- -----
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After executing a system or group login file, the system
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xecutes a personal login file. Use a personal login file to
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execute commands that you want to that you want to issue
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verytime you login. Name the login command procedure LOGIN.COM
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d put it in the default login directory.
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Defineing Parameters or Qualifers
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--------- ---------- -- ---------
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You can create a command procedure that specifies only
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parameters and(or) qualifers and then use the command procedure
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thin a DCL command string. This type of command procedure is
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useful when there is a set of parimeters or qualifiers that you
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requently use with one or more particular commands. To execute
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he command string where you would normally use the qualifiers or
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arameters.
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For example: You could create a command procedure that contains
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these qualifiers.
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/DEBUG/SYMBOL_TABLE/MAP/FULL/CROSS_REFERENCE
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o use this command procedure, execute it on the command line
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here you would otherwise place qualifiers. For example, if you
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ame the command procedure DEFLINK.COM, you would use the
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ollowing command line to link to an object module name
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YNAPSE.OBJ with the qualifiers that you specified in the command
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rocedure:
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$ LINK SYNAPSE@DEFLINK
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he next example shows a command procedure named PARM.COM that
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contains parameters:
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HAP1, CHAP2
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To execute the procedure, use it in a command string in place of a
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parameter name:
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$ DIRECTORY @PARAM
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s the others in this set are completed, they should stay in a
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oup.
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________________________________________________
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\
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H)ackRite 1986 - Advanced Telecommunications Inc.
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________________________________________________/
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DOWNLOADED FROM P-80 SYSTEMS.....
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