December 2014 – Rui Miguel Feio

Recent Articles

[ 19th October 2026 ] When AI Meets RACF: Can an Authorised Identity Become a Security Risk? RACF
[ 14th October 2026 ] AI Gone Wild: When Artificial Intelligence Stops Following the Rules Documentaries
[ 12th October 2026 ] The AI Systems Programmer: Is the Mainframe Skills Gap About to Change? Tech - AI
[ 5th October 2026 ] AI Sovereignty: Perhaps the Mainframe Had It Right All Along Tech - AI
[ 21st September 2026 ] AI on the Mainframe Is Moving from Experimentation to Production Tech - Mainframe

How To List the z/OS UNIX System Services File Systems Currently in Use

18th December 2014 Rui Miguel Feio

As always there’s more than one way to skin a cat and listing the z/OS UNIX System Services file systems currently in use is no different. You can use ISHELL, OMVS, you can write a script,… or you can simply use an MVS command to do it. What MVS command […]

REXX Code to List All Tasks That Are Currently Running

9th December 2014 Rui Miguel Feio

The following REXX code will list all tasks that are currently running on the mainframe system: /* REXX */ /* Developed by S. Tresadern */ cvt = c2x(Storage(10,4)) asvt = mvsaddr(cvt 22C 4) asvtmaxu = x2d(mvsaddr(asvt 204 4)) do i = 0 to asvtmaxu – 1 offset = d2x(x2d(210) + […]

GSE – Meeting Enterprise Systems Security Group (Brussels, Dec 12)

2nd December 2014 Rui Miguel Feio

Following our presence at the IBM System z Security Conference in Montpellier, my colleague and good friend Steve Tresadern and I have been invited to present at the GSE – Meeting Enterprise Systems Security Group in Brussels. We will be talking on “Implementation of RBAC and Data Classification”. This year the meeting will include 2 tracks, a […]