[nmglug] [Fwd: Re: [dt-general] DigiTemp to rrd tool graphing]

[a]

Nick:
Can you guide me from here**(see below next paragraph),such as were to
place it would it be:/user/local/rdtool/bin/rdtool. placed in there as a
file?if so under what name?  Anthony

**That tells bash that it is a perl script and to run the perl
interpreter
with the -w flag which will enable useful warnings. The script should be
set as executable (chmod a+x script.pl)

On Mon, 2009-12-07 at 13:01 -0700, a wrote:
> Nick:
> Thanks for your communication.
> Does the accompanying script make any sense to you,can you suggest how
> to use it?,apparently is not a perl script.I believe it will populate a
> rrdtool data base as part of an example program.
> Anthony
> 
> > #!/usr/bin/perl -w
> #
> # DigiTemp v2.1 RRDB database Creation
> #
> # Copyright 1997-2001 by Brian C. Lane <bcl at brianlane.com>
> www.brianlane.com
> # All Rights Reserved
> #
> # This program is free software; you can redistribute it and/or modify
> it
> # under the terms of the GNU General Public License as published by the
> Free
> # Software Foundation; either version 2 of the License, or (at your
> option)
> # any later version.
> #
> # This program is distributed in the hope that it will be useful, but
> WITHOUT
> # ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
> # FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
> for
> # more details.
> #
> # You should have received a copy of the GNU General Public License
> along
> # with this program; if not, write to the Free Software Foundation,
> Inc.,
> # 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA
> 
> use Time::Local;
> use RRDp;
> 
> /RRDp::start "/usr/local/rrdtool/bin/rrdtool";
> 
> # Create the database
> 
> RRDp::cmd "create digitemp.rrd \
> DS:room:GAUGE:600:U:U  \ 
> DS:attic:GAUGE:600:U:U  \
> DS:desk:GAUGE:600:U:U   \
> RRA:AVERAGE:0.5:1:600    \  
> RRA:AVERAGE:0.5:6:700    \  
> RRA:AVERAGE:0.5:24:775   \  
> RRA:AVERAGE:0.5:288:797  \  
> RRA:MIN:0.5:1:600        \  
> RRA:MIN:0.5:6:700        \  
> RRA:MIN:0.5:24:775       \  
> RRA:MIN:0.5:288:797      \
> RRA:MAX:0.5:1:600        \  
> RRA:MAX:0.5:6:700        \  
> RRA:MAX:0.5:24:775       \  
> RRA:MAX:0.5:288:797";
> 
> $answer = RRDp::read;
> #print $$answer;
> 
> RRDp::end;
> 
> 
> On Mon, 2009-12-07 at 11:56 -0700, Nick Frost wrote:
> > a wrote:
> > >
> > > ------------------------------------------------------------------------
> > >
> > > Subject:
> > > Re: [dt-general] DigiTemp to rrd tool graphing
> > > From:
> > > a <akaluta at taosnet.com>
> > > Date:
> > > Mon, 07 Dec 2009 11:36:48 -0700
> > > To:
> > > DigiTemp General Discussions <dt-general at lists.brianlane.com>
> > >
> > > To:
> > > DigiTemp General Discussions <dt-general at lists.brianlane.com>
> > >
> > >
> > > What does this mean #! /usr/bin/pearl  -w
> > >   
> > -w means enable or disable warnings. But it should be "perl" and not 
> > "pearl". PERL = Programmed Extraction and Reporting Language. pearl = 
> > white things found in oysters that are expensive. :-)
> > 
> > man perl
> > 
> > "If something strange has gone wrong with your program and you’re not
> > sure where you should look for help, try the -w switch first. It will
> > often point out exactly where the trouble is."
> > 
> > "The "use warnings" pragma (and the -w switch) produces some lovely
> > diagnostics."
> > 
> > >> prelimary-Did I download correct perl as indicated in initial step  2)
> > >> above?
> > >> What do I do with the following,do I load it manually or somehow put it
> > >> in /usr/bin/perl -w
> > >>     
> > which perl
> > 
> > or;
> > 
> > wheris perl
> > 
> > should tell you where perl lives on your system. As long as PERL is in 
> > /usr/bin/ you're fine, unless you want a specific version of PERL, in 
> > which case you will change the script's first line to point at the 
> > version of PERL you want to use. If it's not and somewhere else (e.g. 
> > /usr/local/bin/)
> > 
> > your would change the script's first line accordingly;
> > 
> > e.g.
> > 
> > #!/usr/local/bin/perl -w
> > 
> > Hope that helps,
> > 
> > -Nick
> > 
> > 
> > 
> 
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