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