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Date:      Mon, 25 Mar 2002 12:50:56 -0600
From:      Dan Nelson <dnelson@allantgroup.com>
To:        Drew Tomlinson <drew@mykitchentable.net>
Cc:        Walter Hop <walter@binity.com>, smorton@acm.org, questions@FreeBSD.ORG
Subject:   Re: Showing Uptime Via webpage
Message-ID:  <20020325185056.GE14939@dan.emsphone.com>
In-Reply-To: <008401c1d42d$7ad8f420$f82a6ba5@lc.ca.gov>
References:  <Pine.GSO.4.44L0.0203232239500.14624-100000@shell.core.com> <3C9E0754.2010104@verizon.net> <006201c1d423$ee01be00$f82a6ba5@lc.ca.gov> <200203251840.33315@silver.dt1.binity.net> <007a01c1d426$38b2c410$f82a6ba5@lc.ca.gov> <20020325182247.GD14939@dan.emsphone.com> <008401c1d42d$7ad8f420$f82a6ba5@lc.ca.gov>

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In the last episode (Mar 25), Drew Tomlinson said:
> From: "Dan Nelson" <dnelson@allantgroup.com>
> > > > [in reply to Drew Tomlinson, Monday 25 March 2002 18:38]
> > > >
> > > > > > #!/usr/bin/perl
> > > > > > print "Content-type: text/plain\n\n";
> > > > > > system ("uptime");
> > > > > > exit;
> > > > >
> > > > > I tried this just out of curiosity but ran into problems.  I
> > > > > don't get any errors but I just get a blank web page.
> > > >
> > > > What happens if you run "/usr/bin/uptime" instead of "uptime"?
> > >
> > > Thanks for your suggestion.  However, "/usr/bin/uptime" makes no
> > > difference.  The page is still blank.
> >
> > Can you print any data at all?   Note that you are generating an
> > incorrect HTML header; the spec says you must use CRLFs, and some
> > proxies/browsers may refuse to parse the page.
> 
> I'm not sure exactly what you mean by "..print any data...".  My web
> server shows my static pages just fine.  I have a test script that I

If you just have 

#!/usr/bin/perl
print "Content-type: text/plain\r\n\r\n";
print "Hello, World!\n";

Do you get output?  If not, then chances are all CGIs will fail, and
you have a generic CGI issue.  If you do, then somehow your
system("uptime") is failing without logging the error.

-- 
	Dan Nelson
	dnelson@allantgroup.com

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