Tus primeros pasos con COBOL
Importancia de aprender COBOL en la actualidad
Estructura de un programa en COBOL
Descarga y configuración del entorno de desarrollo en Windows
Descarga y configuración del entorno de desarrollo: X3270
Descarga y configuración del entorno de desarrollo en Ubuntu
Descarga y configuración del entorno de desarrollo en macOS
Conociendo el entorno de COBOL: Hercules / MVS
Comandos del entorno: MVS a detalle
Conociendo la consola de visualización y línea de comandos
Pasos para ejecutar un programa COBOL
"Hola, mundo" en COBOL
Quiz: Tus primeros pasos con COBOL
JCL: Job Control Language
¿Qué es un JCL?
Estructura de un JCL
Utilerías: IEFBR14
Utilerías: IEBGENER
Definiendo tu primer JCL
Definiendo el JCL de ejecución
Quiz: JCL: Job Control Language
Tipos de datos y operaciones matemáticas
Tipos de datos y convenciones
DISPLAY: imprimiendo las variables en pantalla
Operaciones matemáticas
Quiz: Tipos de datos y operaciones matemáticas
Estructuras de control
IF - ELSE
PERFORM
Algoritmos y resolución de problemas
Top-down y modularización
Quiz: Algoritmos y resolución de problemas
Despedida
Siguientes pasos en COBOL
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IEBgener is an essential function that allows you to back up existing files on your system by hosting them in a new archive. This process is vital for generating backups and working with them later. Through this article, you will learn how to create this structure in your development environment.
To begin, you need to be inside the development environment in the main menu. Here you will be shown the steps you need to follow to prepare the necessary JCL:
erec01.platzi.jcls
folder.This is the essential initial process to create the structure before working with IEBgener.
This part is crucial to define how to use IEBgener in your system. Here is the part-by-part process to set up your JCL file correctly.
//STEP02 EXEC EXEC PGM=IEBGENER//SYSPRINT DD SYSOUT=*//SYSUT1 DD DSN=ERC01.*,DISP=SHR//SYSUT2 DD DSN=*,DISP=(,KEEP,DELETE),// SPACE=(TRK,(200,200)),// VOLUME=SER=PUB010,// UNIT=3350//SYSCIN DD DUMMY
Step definition:
EXEC PGM=IEBGENER
to call the utility.Essential parameters:
SYSUT1
: Defines the file to be backed up. The layout(DISP
) of this file is defined with SHR
for unaltered sharing.SYSUT2
: Here you define the file where the copy will be stored, including parameters such as layout, space, volume and the drive.Other components:
SYSPRINT
: Defines how the outputs are handled.SYSCIN
: For dummy operations.Understanding each part of the process will allow you to manipulate JCLs effectively and efficiently.
Here are some recommendations for improving file management in your development environment:
These suggestions will help you maintain a streamlined and orderly development environment. Constant practice and adjustments according to operational needs are key to successful file management. While each system may vary, the basic principles of organization and efficient use of tools such as IEBgener are universal in information technology. Continue to learn and explore the capabilities that this fascinating field has to offer!
Contributions 4
Questions 5
Al final no dijo que hacemos si entramos en modo View y me sale que no se puede guardar 😦
Apuntes:
SYSPRINT DD para definir un nuevo parámetro de la utilería.
El COND me suena como un IF en otros lenguajes de programación
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