A note about the future of ecsoft2.org
ecsoft2.org runs on software (Drupal 7 and PHP 7.4) that reached its end of life years ago and no longer receives security updates. Keeping the site online safely is getting harder.
Giving it a future means migrating it to a current platform — and that is only worth doing if people still use it and want to help keep it alive.
If you care about ecsoft2.org, as a user, a contributor, or someone willing to lend a hand, please ggamba
tiscali [dot] it (get in touch) by January 31, 2027.
If no one comes forward by then, the site will be turned into a read-only archive, so that its content stays available.
OS/2 Warp Version 4 Certification Handbook.
Official original book to prepare to achieve the "OS/2 Engineer Certification" - Edition October 1996.
This book is designed as a self-study tutorial that covers the basic knowledge and skills required to become an IBM-certified OS/2 Warp 4 system engineer. The book covers the basic operating system functions and connectivity capabilities of OS/2 Warp 4 as well as such advanced features as:
On 30 october 2013, IBM International Business Machines Corporation, has granted permission to freely republish the original book, now available in Portable Document Format. Many thanks to Martin Iturbide for his mediation with IBM and also for converting the book into pdf format.


This work is licensed under a Creative Commons Attribution 4.0 International License.
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