Re: REXX from command line (was text equation)

>Date: Tue, 21 Dec 1999 07:37:33 -0800
>From: Jim Langston <jlangston@conexfreight.com>
> ...
>Now I only have one question.  How do I run a REXX procedure
>from the command line?
> ...

Jim, you can use STRREXPRC, or you can add a CMD interface.
If you use a CMD, say *REXX as the CPP and then you give the
source file and member with the REXX proc, and instead of
getting the argument directly, you get it in the form
PARMNAME('parmvalue').

For example, if you have this PARM in your command:
   PARM       KWD(EXPR) TYPE(*char) len(500)
You would code this in your REXX to get the parameter into
in variable expr:
   parse arg "EXPR('"expr"')"
instead of just
   parse arg expr

Here's a cool little rexx calcalator:
/* */
 say "Enter expressions.  Enter a blank line to exit."
 do forever
   parse pull expr
   if (expr = '') then leave
   interpret expr
 end
 return

Here's a session using it (lines marked > are input lines):

    Enter expressions.  Enter a blank line to exit.
  > i=3
  > j=4
  > say i+j
    7
  > i='abc'
  > say substr(i,1,2)
    ab
  > do i = 1 to 3; say i; end;
    1
    2
    3
  >
    Press ENTER to end terminal session.

Barbara Morris (woman of the zeros)


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