What is AS400 ?

The AS400 (AS/400) is a popular family of mid-sized computer systems which can also be used as multi-user computer systems. By this, we mean that a single computer can interact with more than one user at a time. It was first introduced by IBM on June 21st, 1988. The ‘AS’ stands for “Application System”. Use of […]

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WRKACTJOB – Work with Active Jobs

The Work with Active Jobs – WRKACTJOB command allows to work with status information and performance for the active jobs in the system. The sequence of jobs can be changed with the Sequence (SEQ) parameter or through operations on the display. Other parameters allow the selection of jobs to be shown on the display. The selection parameters […]

Change Current Library

The current library (*CURLIB) is the first user library that is searched before the rest of the user libraries in the list when the system looks for an object. If a user does not specify a library name when requesting an operation on an object, the libraries in the library list are searched for the […]

Use of SEU Editor

The IBM AS/400 provides an integrated set of Application Development Tools (ADT) to design, develop and maintain applications. One such tool is the Programming Development Manager (PDM) that offers the following: Integrated application development environment. List-oriented selection of items for development or maintenance. Extendable interface to tools through user-defined options. Another tool is the Source […]

Program Development Manager (PDM)

Programs are created from source statements. On the AS/400, source statements are entered using PDM, the Program Development manager. Technically, PDM uses the Source Entry Utility (SEU) as the editor. But you don’t have to think of SEU as something different from PDM. PDM provides a way to enter program source statements and then to […]

Library List

A library list is similar in concept to the “PATH” in Unix and MS-DOS. It specifies which libraries are to be searched and the order in which they are searched when the system looks for an object. A library list is identified by the value *LIBL. A default library list is automatically created by OS/400 […]