REXX

Regina Rexx

Installation

Ubuntu
apt install regina-rexx
Alma Linux
# Download regina-rexx-{version}.tar.gz from http://www.rexx.org
tar xzf regina-rexx-{version}.tar.gz
cd regina-rexx-{version}
./configure [OPTION]... [VAR=VALUE]...
make
make install

Examples

Fibonacci Numbers
/* Fibonacci Numbers */
say fib(arg(1))
exit

fib: procedure
  parse arg n .
  if n < 2 then
    n = n
  else
    n = fib(n - 2) + fib(n - 1)
return n

/*
    example
        run:
            rexx fib.rexx 30
*/