APIs By Example: Where Is That Module Bound?
To help you resolve cross-references in an ILE development environment, the Work with Module References (WRKMODREF) command is a handy tool to add to your toolbox. Carsten Flensburg demonstrates how you can put this command to work in your shop.
APIs by Example: Keeping Track of Your Exports
Do you often find yourself needing a routine but can't remember which service program it resides in? Or maybe you're writing a new procedure and want to verify whether a procedure of the same name already exists. Carsten Flensburg offers his Work with Program Export (WRKPGMEXP) command, which lets you list all modules and service programs that export a specific procedure or data item.
Job Accounting and the Retrieve Journal Entries API
An IBM i running a full production workload can produce a heap of information, but gleaning valuable knowledge from that mound of data might require the programming skills of an API programmer. To that end, Carsten Flensburg shows how to use the QjoRetrieveJournalEntries API and ANZJOBACG command to immediately extract and select job resource information from the QACGJRN system accounting journal.
How to Display the Screen of Another Interactive Job
If you've ever had a requirement to run a program to perform a process in another job, or make the 5250 data stream communicate directly to a display device without the intervention of a display file or panel group, this article is for you. Carsten Flensburg shows how to satisfy both requirements by using the APIs and commands discussed here.
Working with Job IFS Object Locks
To find the IFS object that a specific job is locking or accessing, consider using the Retrieve Referenced Objects (QP0LRRO) API. With this API, and the WRKJOBIFSL and WRKIFSLCK commands, you'll be well equipped to investigate and handle IFS object locks.
Working with IFS Object Locks
To quickly find IFS object lock information, use this shortcut to take advantage of the Retrieve Object References (QP0LROR) API to implement the Work with IFS Object Lock (WRKIFSLCK) CL command.
Analyze Object Authorities Using Security APIs
Do you sometimes wonder why a particular user can delete a certain object, or why a user can't access an object that everybody else can? If you do, the Retrieve User Authority to Object (QSYRUSRA) API is designed to help answer these types of questions. In addition to retrieving a user profile’s authority to a specific object, QSYRUSRA also returns information about the source of this authority.
Let Users Instantly Access RUNSQL Command Instructions
IBM's new Run SQL (RUNSQL) command, delivered midrelease, lacks a help text panel group that would let users instantly access information about the command and its parameters. To fix this situation until IBM corrects it with the next IBM i OS release, Carsten Flensburg provides a help text panel group you can install today to let users easily access RUNSQL command instructions from the command line.
Let Users Instantly Access SNDSMTPEMM Command Instructions
IBM's new Send SMTP Email (SNDSMTPEMM) command, delivered midrelease, lacks a help text panel group that would let users instantly access information about the command and its parameters. To remedy this situation until IBM corrects it with the next IBM i OS release, Carsten Flensburg provides QSMTPUSR, a help text panel group you can install today to let users easily access SNDSMTPEMM command instructions from the command line.
APIs by Example: Watch Definitions and the Start Watch (QSCSWCH) API
Since release 5.4, we've had the ability to define and start watches on your IBM i. A watch can monitor for specific or generic messages in a job log or all messages of a specific type issued in any job or named jobs on the system. You can also associate watches with traces when issuing the trace commands that specify watches parameters. Here, the watches in scope are the ones initiated using the STRWCH command or the QSCSWCH API. When it comes to system and job monitoring, watches are a powerful tool.
APIs by Example: Physical File Triggers and the QDBRTVFD API
Though we can use native CL commands and SQL statements to create and manage physical file triggers, we still lack a CL command for listing and working with the triggers defined for a physical file. One easy workaround is to use the Retrieve Database File Description (QDBRTVFD) API and User Interface Manager programming techniques. To find out how you can use QDBRTVFD to access details about the triggers associated with a specified physical file, read on.
Try New Subsystem Entry Commands MVP eBook
Configuring and maintaining a subsystem description, which includes subsystem entries of many different types, requires quite a bit of effort on the IBM i. While the Work with Subsystem Description (WRKSBSD) command allows you to see all the subsystem entries currently associated with the subsystem, there's no way to directly manipulate these entries using this command.
In this ebook, Carsten Flensburg looks to make your life easier by providing Work with commands that cover all subsystem entry types.
APIs By Example MVP eBook
APIs by Example's original purpose was to establish a library of API samples for you to use as a starting point for programming tasks involving APIs. Over time, this intention has evolved into putting the APIs in the context of CL commands and utilities to add a practical aspect to the API code samples and utilities. This set of seven APIs by Example articles deals with the many cryptographic APIs involved in the key management part of the challenge of setting up a secure, manageable cryptographic environment.
You will learn about:
3 CL Commands to Manage Digital Certificates
Ensuring that digital certificates are up-to-date is essential to keeping your enterprise's Internet business transactions running smoothly. Although the IBM i provides no automated notification of certificate expiration, the Retrieve Certificate Information API provides a means for accessing information useful for certificate management. Carsten Flensburg uses the API to simplify the task of managing digital certificates on the IBM i, by creating three useful commands that let you check the expiration status of digital certificates, work with digital certificates, and display certificate information.
