🚀 go-pugleaf

In article <92202.121337SPS2@psuvm.psu.edu> Steven P. Sedlmeyer <SPS2@psuvm.psu.edu> writes:
>In article <9207182258.AA10355@cs.utexas.edu>, HARPER@VTVM1.CC.VT.EDU (Scott
>Harper) says:
>>
>>   What REXX command do I use to scan the system's output for a text string?
>>   I would like REXX to invoke a program then wait for a specific string to
>>   occur (a prompt) before continuing.  This is basically the same as the
>>   WAITON function found in many communications package scripting languages...

>You might try something like the following
>/* start a process and look for a string in stdout */

....

>address cmd 'start command | RXQUEUE'  /* pipe stdout into rexx queue */
>found = false            /* string not found */
>Do until found           /* loop until we find string in stdout */
>   pull line             /* pull line from queue */

This will probably seek input from the console when nothing is pending on
the queue (at least I think the documentation says it will).  I'm not sure 
what will happen when REXX is waiting on the console and data appears on 
the queue.

At any rate, another solution, which will ignore keyboard input:

'@start <some-command-here> | RXQUEUE'
do forever
  s = linein("queue:")
  if pos(target_string, s) > 0 then leave
end


Jason.
-- 
Jason Campbell | not talking for SU | "OS/2...saving the world thru software!"
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