Running a Program Using the CL CALL Command

Chapter 9. Running a Program

This chapter shows you how to:

¹ Run a program and pass parameters using the CL CALL command

¹ Run a program from a menu-driven application

¹ Run a program using a user-created command

¹ Manage activation groups

¹Manage run-time storage.

In addition, you can run a program using:

¹The Programmer Menu. TheCL Programming , SC41-5721-02 manual contains

information on this menu.

¹The Start Programming Development Manager (STRPDM) command. The

ADTS/400:

Programming

Development Manager

manual

contains

information

on

this

command.

 

 

 

 

¹ The

QCMDEXC program.

The CL Programming

manual

contains

information on

this program.

¹A high-level language. Chapter 10, “Calling Programs and Procedures” on page 127 provides information on running programs from another HLL or calling service programs and procedures.,

Running a Program Using

the

CL

CALL Command

 

 

 

 

 

 

 

 

 

 

 

You

can use the CL CALL

command

to

run

a

program

(type *PGM). You can

the

command

 

interactively,

as

part

of

a

batch

job,

or

include it

in

you

need

prompting,

type

CALL

and

press F4 (Prompt). If

you

need

he

CALL

and press F1 (Help).

 

 

 

 

 

 

 

 

 

 

 

For

example,

to call

the

program

EMPRPT

from

the

command

line,

type:

 

CALL EMPRPT

The program object specified must exist in a library and this libra tained in the library list *LIBL. You can also explicitly specify th CALL command as follows:

CALL MYLIB/EMPRPT

See theCL Reference (Abridged)for further information about using the CL CA command.

Once

you call your program, the OS/400 system performs the instructions

the

program.

Copyright IBM Corp. 1994, 1999

103

Page 126 Page 128
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IBM AS/400 manual Running a Program Using the CL Call Command, 103, Manual Contains Information on
Page 126 Page 128

AS/400 specifications

The IBM AS/400, now known as the IBM iSeries, is a midrange computer system that has been a cornerstone of enterprise computing since its introduction in 1988. Designed to provide a robust platform for business applications, the AS/400 is celebrated for its reliability, scalability, and integrated database capabilities.

One of the key features of the AS/400 is its Integrated Operating Environment, which blends hardware and software resources seamlessly. This integration allows businesses to execute diverse workloads, ranging from traditional applications to modern web-based services, all on a single platform. The operating system, OS/400 (now IBM i), offers a rich set of APIs and tools for developers, simplifying application development and management.

Another standout characteristic of the AS/400 is its built-in database, DB2 for i. This powerful relational database management system allows for efficient data handling and provides advanced features such as support for SQL, XML, and JSON, making it easier for businesses to manage their data and integrate it with other systems. The database's tight integration with the operating system enables high performance and security.

In terms of scalability, the AS/400 can accommodate small businesses as well as large enterprises, with the ability to support hundreds of users simultaneously. Its architecture allows for easy upgrades in hardware, meaning that organizations can scale their systems without replacing the entire infrastructure.

Security is another critical attribute of the AS/400. With a sophisticated security model, it offers built-in user authentication, access control, encryption, and auditing capabilities to protect data and applications from unauthorized access.

The AS/400 also supports multiple programming languages, including RPG, COBOL, Java, and PHP, giving organizations the flexibility to choose the development tools that best fit their needs. This diversity helps maintain legacy applications while also developing new ones that leverage modern technologies.

Moreover, the platform supports both traditional green-screen interfaces and modern graphical user interfaces, allowing organizations to transition smoothly into contemporary user experience paradigms.

Overall, the IBM AS/400 stands out as a resilient, flexible, and secure computing platform that enables organizations to effectively manage their business operations, streamline processes, and adapt to changing market demands. Its unique combination of integrated features and capabilities ensures that it remains relevant in today's fast-paced technology landscape.
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