2.33 Is there a way within MPE/iX to search for a string in all files (with wildcard selection) in a specified group/account?

Posix can do this for you from SH.HPBIN.SYS. To search for ‘searchstring’ in all files in a group:

find /ACCOUNT/GROUP -type f | xargs grep searchstring

To search for ‘searchstring’ in all files in an account:

find /ACCOUNT -type f | xargs grep searchstring

If you want a case-insensitive search, use grep -i.