W3C home > Mailing lists > Public > www-validator@w3.org > May 2002

Who has a local install of validator run from command line?

From: John Murdie <john@cs.york.ac.uk>
Date: Wed, 1 May 2002 18:16:01 +0100 (BST)
To: www-validator@w3.org
cc: John Murdie <john@cs.york.ac.uk>
Message-Id: <E172xi4-0003uj-00@minster.cs.york.ac.uk>
I've installed a local copy of the W3C Validator (accessed via a web
page), and now wish to run it `in batch' under Linux. I could hack at
the Perl `check' script, but would rather not do so. I imagine that
there is a solution - e.g. a C program which execs `check'. Has any one
got a ready-made one they're willing to share?

I guess this is a FAQ, but I've searched the archive of this mailing
list for `command-line' and `exec', and found nothing. Searching for
`batch' gets several queries similar to mine, but no off-the-shelf

I think something like:

#include <stdio.h>
#include <unistd.h>

main(int argc, char *argv[])
	char *query = "QUERY_STRING=uri=http://www.cnn.com/";
	fprintf(stderr, "query \"%s\"\n", query);
	if (putenv(query) != 0) {
		fprintf(stderr, "putenv fails\n");

	/* Arrange that perl check script finds correct directory from $0. */
	argv[0] = "/var/www/validator-20010913/";
	execv("/var/www/validator-20010913/httpd/cgi-bin/check", argv);

ought to work - but instead check complains that it can't see the URI.
(I've also tried putting "" around the r.h.s. of the query string - no

Failing this, if I can't make a satisfactory solution myself, I'll
install the WDG validator instead - I see that that can be run from the
command line out of the box, see

John A. Murdie
Experimental Officer (Software)
Department of Computer Science
University of York
Received on Wednesday, 1 May 2002 13:19:48 UTC

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