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From: jayjwa <jayjwa@atr2.ath.cx.invalid>
Newsgroups: comp.os.vms
Subject: Re: Local Versus Global Command Options
Date: Mon, 17 Feb 2025 18:46:49 -0500
Organization: Atr2 RG 2025
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Lawrence D'Oliveiro <ldo@nz.invalid> writes:

> Can you show us a simple C program that just prints out its command 
> arguments, and how it responds to some sample command lines?
VMS seems to be alone in converting case.

✔≻ cat cmdlin.c
/* A program to demo printing of command line args under various OSs. */
#include <stdio.h>


int main( int argc, char *argv[] ) {
        printf( "Did I hear you say %s?\n", argv[1] );
        return 0;
}
✔≻ gcc -o cmdlin cmdlin.c
✔≻ ./cmdlin Hello World
Did I hear you say Hello?
✔≻ ./cmdlin "Hello World"
Did I hear you say Hello World?

@compile cmdlin.c                                                                                                   
KCC:    CMDLIN                                                                                                      
 "CMDLIN.C", line 9: [Note] Parameter "argc" not used                                                        
       (main+4, p.1 l.8):  "Did I hear you say %s?\n", argv[1] );  return 0; }                              
                                                                                                                    
<JAYJWA.PROGRAMMING>CMDLIN.PRE.1                                                                      
<JAYJWA.PROGRAMMING>CMDLIN.FAI.1                                                                       
FAIL:  CMDLIN
@load cmdlin
LINK:   Loading
@save cmdlin
 CMDLIN.EXE.2 Saved
@cmdlin Hello World
Did I hear you say Hello?
@cmdlin "Hello World"
Did I hear you say Hello World?

c:\bcc32 -5 -ecmdlin.exe cmdlin.c
c:\cmdlin Hello World
Did I hear you say Hello?
c:\cmdlin "Hello World"
Did I hear you say Hello World?

$ cc /version
Compaq C V6.4-005 on OpenVMS VAX V7.3
$ cc cmdlin.c
$ link cmdlin
$ mcr DUA1:[JAYJWA.PROGRAMMING.C]cmdlin Hello World
Did I hear you say hello?
$ mcr DUA1:[JAYJWA.PROGRAMMING.C]cmdlin "Hello World"
Did I hear you say Hello World?

This matters with tools like curl (-O vs -o) and zip (-V and -v).

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