HP TACL User Manual

9 Syntax Summary
107365 Tandem Computers Incorporated 9–1
The syntax diagrams summarized in this appendix are divided into five categories:
The command interpreter set of commands and functions, supplied with TACL in
the directory :UTILS:TACL
The built-in functions and variables that constitute the TACL programming
language
The specialized forms of the #DEF function used to create and redefine structured
variables (STRUCT declarations)
The specialized forms of the #SET function used to assign values to TACL built-in
variables
The commands of the #DELTA character processor
:UTILS:TACL
Commands and
Functions
The following summarizes the syntax of the TACL command interpreter commands
and functions:
ACTIVATE [ [\ node-name .]{$ process-name | cpu , pin } ]
ADD DEFINE
{}
define-name
( define-name [, define-name ]…)
[, LIKE define-name ] [, attribute-spec ] …
ADDDSTTRANSITION start-date-time , stop-date-time , offset
ADDUSER [ / run-option [ , run-option ] … / ]
group-name . user-name , group-id , user-id
ALARMOFF
ALTER DEFINE define-name-list
{}
‚ attribute-spec
‚ RESET reset-list
ALTPRI [\ node-name .]{$ process-name | cpu , pin } , pri
ASSIGN [ logical-unit [ , [ actual-file-name ]
[ , create-open-spec ] … ] ]
ATTACHSEG
{}
PRIVATE
SHARED
file-name directory-name
BACKUPCPU [ cpu ]
BREAK [ variable-level ]
BUILTINS [ / { FUNCTIONS | VARIABLES } / ]
BUSCMD [ / run-option [ , run-option ] … / ]
{ X | Y } , { DOWN | UP } , from-cpu , to-cpu

HP TACL Specifications

General

Name	HP TACL
Purpose	Task automation, system management, and application control
Category	Software
Platform	HP NonStop
Type	Scripting language
Developer	Hewlett-Packard

Summary

Section 1 An Overview of TACL

Running the Examples in This Manual

Instructions for executing manual examples, including setting required variables.

About This Manual

Section 2 Developing TACL Programs

Processing Character Data

Covers tasks like constructing text strings, analyzing output, and manipulating characters.

Debugging TACL Programs

Introduces the TACL debugger for step-by-step execution and variable examination.

Section 3 Developing TACL Routines

Processing Arguments

Details how routines handle arguments using #ARGUMENT, including options and alternatives.

Writing an Exception Handler

Explains handling events like BREAK keys or TACL errors using exception handlers.

4 Accessing Files

#REQUESTER Operation

Describes the #REQUESTER function for opening files and initiating I/O operations.

Requesting Waited Reads

Explains opening files for waited read operations using #REQUESTER.

5 Initiating and Communicating With Processes

Initiating a Process: RUN and #NEWPROCESS

Covers starting processes using RUN and #NEWPROCESS, including startup options.

Using the INLINE Facility

Using INV and OUTV

Using $RECEIVE

Using #SERVER

6 Running TACL as a Server

Running a TACL Process as a Server

Explains making a TACL process a server by establishing its IN file as $RECEIVE.

Running TACL Code as a Server

Details providing TACL code for a TACL-server process using #INPUTV and #REPLYV.

Using TACL as a Pathway Server

Describes creating a Pathway environment with TCP and TACL servers to process requests.

7 Using Programmatic Interfaces

Overview of SPI and EMS

Using SPI

Using EMS

8 Example of a System Management Program

Monitoring System Operation