I'm switching from Windows to Ubuntu.
I have a slew of REXX programs running Reginald REXX.
Apparently I must convert them to Regina REXX.
Reginald offers a proprietary SORT statement.
(See  http://www.ulisoft.org/rexx_referenz/sort.htm)
My REXX programs made extensive use of this powerful SORT utility.
Regina does not have the same SORT.
What should I use instead?
Please advise.