ViewPoint Manual

ViewPoint Manual—426801-001

4-1

Process Definition Commands

Introduction

This section describes the syntax and semantics of the Define Process commands. The

Define Process command library provides a set of commands to the TACL command

interpreter. The library is available to you when you log on to your system in the same

way as your other TACL library files.

Section 2, Using ViewPoint

gives a brief introduction to using the Define Process

capability. Section 5, Functional Description

describes the terms and concepts that can

help you understand the operation of the commands that are in this section. In

particular, you might want to read the discussion under the heading “Network Command

Functions.”

Command Introduction

The commands in the Define Process library allow you to define, start, stop, and remove

a process in any network node to which you have access. This means that you must

have remote passwords established between your system and all other systems that you

wish to access. Refer to the Guardian User’s Guide for information on remote

passwords.

You can supply input commands interactively, one line at a time, or from a file or

variable. You can view or delete input and output, or save it in a file or in a variable.

Table 4-1 lists all the Define Process commands and gives a brief description of the

function of each command. The remainder of the section provides complete

descriptions and syntax for each command, and the syntax for invocation of a defined

process. Table 4-1 and the complete command descriptions are listed alphabetically.

Note. These commands can be used only if you are running ViewPoint with access to TACL.

Table 4-1. Define Process Commands (page 1 of 2)

Command Description

DP Defines a background process, and unless otherwise indicated, starts the

process.

_PCHECK Returns information about defined processes that can be specified by a

user-defined programmatic interface.

PHELP Displays help text for the Define Process commands.

PINFO Displays the status and characteristics of a background process.

POUT Displays accumulated output from a defined process and removes the data

from the queue.

PSHOW Displays accumulated output from a defined process, or displays input that

has not yet been sent to a defined process, and does not affect the status of

the data in either queue.