[Info-vax] Why doesn't PIPE work with freeware?

[Arne Vajhøj]

On 10/12/2022 12:42 PM, alanfe... at gmail.com wrote:
> Why doesn't this simple PIPE command work? Why doesn't it recognize
> DIRSORT as a verb? It works fine directly at the DCL prompt. And VMS
> native commands work fine. >
> I can DEFINE/USER SYS$OUTPUT to file and SEARCH that file. But shouldn't this work? Why doesn't it? TIA.
> 
> $ PIPE DIRSORT TO%.COM;* /DA=CR | SEAR SYS$INPUT "Dec","Nov"
> %SEARCH-I-NOMATCHES, no strings matched
> $ PIPE DIRSORT TO%.COM;* /DA=CR | TYPE SYS$INPUT
> %DCL-W-IVVERB, unrecognized command verb - check validity and spelling
>   \DIRSORT\

As other have said then most likely the verb is missing
for the subprocess created by pipe.

So you need to add the verb for the subprocess.

Demo:

$ type hello.c
#include <stdio.h>
#include <stdlib.h>

int main(int argc, char *argv[])
{
    int n = atoi(argv[1]);
    for(int i = 0; i < n; i++)
    {
       printf("Hi!\n");
    }
    return 0;
}
$ type hello.cld
define verb hello
     image "sys$disk:[]hello"
     parameter p1
$ cc hello
$ link hello
$ set command hello
$ hello 3
Hi!
Hi!
Hi!
$ pipe hello 3 | type sys$input
%DCL-W-IVVERB, unrecognized command verb - check validity and spelling
  \HELLO\
$ pipe (set command hello ; hello 3) | type sys$input
Hi!
Hi!
Hi!

Arne