On 09.03.2022 18:01, Seymour J Metz wrote:
> Yes, "mycmd myopts" is an expression that evaluates to the command string. It
> could as well have been a single variable, a literal or a more complicated
> expression.
>
> Yes, it's synchronous. Alas, OOREXX doesn't have the ANSI address syntax and
> Regina doesn't have multitasking.
ooRexx 5.0 got the ANSI address syntax added to it, here an example:
say "demonstrate ANSI REXX in ooRexx 5.0 ('ADDRESS ... WITH ...')"
parse version v
say "version:" v
say
say "sorting a stem using the operating system 'sort' command:"
/* define the stem array */
in.1="Zeppelin"
in.2="berta"
in.3="Anthony"
in.0=3
cmd="sort" /* operating system command 'sort' */
address system cmd with input stem in. output stem res.
do i=1 to res.0 /* iterate over all stem elements */
say i":" res.i
end
say "---"
say "sorting an array using the operating system 'sort' command:"
/* define the array */
names=.array~of("Xavier", "New York", "caesar")
arrOut=.array~new /* create array to fetch stdout */
address system cmd with input using (names) output using(arrOut)
do i=1 to arrOut~items
say i":" arrOut[i] /* iterate over all array elements */
end
The above program runs on Windows and Unix as these operating systems possess a
'sort' command, here
the output running the above program on Windows:
G:\tmp\orx\address>test.rex
demonstrate ANSI REXX in ooRexx 5.0 ('ADDRESS ... WITH ...')
version: REXX-ooRexx_5.0.0(MT)_32-bit 6.05 30 Jan 2022
sorting a stem using the operating system 'sort' command:
1: Anthony
2: berta
3: Zeppelin
---
sorting an array using the operating system 'sort' command:
1: caesar
2: New York
3: Xavier
This is really a great feature, students love it as it dramatically simplifies
running commands and
redirecting stdin, stdout and stderr from/to stems, streams (files) and
collections (like arrays in
the above example).
---rony
> ________________________________________
> From: IBM Mainframe Discussion List [[email protected]] on behalf of
> Paul Gilmartin [[email protected]]
> Sent: Wednesday, March 9, 2022 11:47 AM
> To: [email protected]
> Subject: Re: Rexx copy to OMVS
>
> On Wed, 9 Mar 2022 16:26:36 +0000, Seymour J Metz wrote:
>
>> address SYSTEM mycmd myopts WITH INPUT foo OUTPUT FIFO
>> address SYSTEM mycmd myopts WITH INPUT foo OUTPUT STEM bar.
>> address SYSTEM mycmd myopts WITH INPUT foo OUTPUT STEM bar. ERROR APPEND baz
>>
> Each of those is synchronous, not returning control to the Rexx scriipt
> until "mycmd myopts" terminates, not suitable for a long-running command.
>
> (Isn't myopts merely part of the command string?)
>
>> Why won't popen let you redirect both stdin and stdout? Or all three?
>>
> Desirable, but entailing synchronization problems unless Rexx were
> also to provide the lacking SYSCAL SELECT:
>
> <https://secure-web.cisco.com/1DRefECC2oZAuUy07BTqqULOi5BWpTRjE1YzaoJUi5iQr-m4qNgCXBzb6ahZOYtX9F59cqxdALciiFBYa7quyrppYYEeL3up7VXSvvnQfjq_o8s8xLHENi9HZnmhX1rBuL8EUQY7Wk6x0IZX3d5-764g4NmxyYmdFBaE1UmQxHkvnCC4cc3zt6gjxAeUe7SSNyu0OJdnvqSwIcsV48N1MjLRTFCleqf6baummYarH56QP8WhHTpq-xlPhKORcxW8Ikl_E_NuCYecqqifnA_64r67FxAdVteXrUX9EQSS5weZocA_ksSLYSommj6HNNYZQ-TJEv3yKJKERWooOVZxipkRCJ9r73WUrDLYb790Vac2LhmyURyssBevH43YclAsXuKFXEzaVOHSKaZEUIIDJi3WWmZ5E5IlCx5zL_VYgMa7XVVjVbJ0XpJWtebtYkc6B/https%3A%2F%2Fpubs.opengroup.org%2Fonlinepubs%2F9699919799%2Ffunctions%2Fpselect.html%23tag_16_400>
>
>> ________________________________________
>> From: Paul Gilmartin
>> Sent: Wednesday, March 9, 2022 10:47 AM
>> ...
>> OTOH, I know of no other Rexx with the facility of z/OS STREAM POPEN:
> --
> gil
>
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