Re: Mecrisp on the TI Stellaris Launchpad

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From	Hans-Bernhard Bröker <HBBroeker@t-online.de>
Newsgroups	comp.arch.embedded, comp.lang.forth
Subject	Re: Mecrisp on the TI Stellaris Launchpad
Date	Sat, 18 Apr 2015 00:25:28 +0200
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Cross-posted to 2 groups.

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Am 17.04.2015 um 16:42 schrieb Anton Ertl:
> Blajrs Jrolrsen <boegre@no.com> writes:
>> On 2015-04-17, rickman <gnuarm@gmail.com> wrote:
>>> Yes, I figured that out.  It seems the current working directory is not
>>> considered under Linux for finding executables... really!?

Yes, really.

> I think it has something to do with more usage of Unix/Linux by
> non-programmers (to such an extent that they don't even write their
> own shell scripts).

I don't think that argument works.

There have been platforms where a very large fraction of users never 
wrote a program of their own.  The biggest of those has to be Microsoft 
Windows, closely followed by MacOS.

But Unix never was anywhere near the top of that category.  I'm not 
aware of any system that encouraged users to write their own programs 
more strongly than Unix did: the whole "toolkit" paradigm almost forced 
_users_ to become programmers, at least at the shell script level.  And 
how many other systems did come with a bona-fide HLL compiler right 
there in the box?

> In the old times, we had "." first in the PATH.  If I am working on a
> new version of Gforth, and am in the build directory of Gforth, then
> saying "gforth" gives me the development version, not the installed
> version.

And that was baskk-ackward.  If only because it's a whole lot easier to
and type the "./" prefix for the exceptional case of wanting something
else than the normal instance of a command, than it would be to figure
out where the "official" one might be, and type the full path to there 
every time you want to be sure you get that.

The distinction between "gforth" and "./gforth" is way easier to handle 
than the one between "/opt/swserver/Forth/GForth/V5/patch1/bin/gforth" 
and "gforth".

> That disadvantage was worked around by removing the "." from the front
> and putting it on the back of the PATH.

That workaround would be half-assed at best, because it relies on the 
obviously flawed assumption that user will never mis-type commands.  But 
because they do, it's relatively easy for an attacker to pre-load their 
traps with lots of mis-typed versions of, 'ls', 'cd', etc.

One other rather important aspect is that the way Unix does it actually
leaves you a _choice_ how you want this handled: _you_ define your $PATH
setting, so you can put '.' in there exactly where you want or need it,
or not at all. On Microsoft platforms, you have no control over it: the 
system forces an implied '.' to the front of your PATH, whether you want 
it or not.

Thread

Mecrisp on the TI Stellaris Launchpad rickman <gnuarm@gmail.com> - 2015-04-02 21:08 -0400
  Re: Mecrisp on the TI Stellaris Launchpad rickman <gnuarm@gmail.com> - 2015-04-13 21:47 -0400
  Re: Mecrisp on the TI Stellaris Launchpad rickman <gnuarm@gmail.com> - 2015-04-16 23:37 -0400
    Re: Mecrisp on the TI Stellaris Launchpad Paul Rubin <no.email@nospam.invalid> - 2015-04-16 20:59 -0700
      Re: Mecrisp on the TI Stellaris Launchpad Mel Wilson <mwilson@the-wire.com> - 2015-04-17 13:16 +0000
    Re: Mecrisp on the TI Stellaris Launchpad rickman <gnuarm@gmail.com> - 2015-04-17 00:19 -0400
      Re: Mecrisp on the TI Stellaris Launchpad Paul Rubin <no.email@nospam.invalid> - 2015-04-16 21:56 -0700
        Re: Mecrisp on the TI Stellaris Launchpad rickman <gnuarm@gmail.com> - 2015-04-17 14:47 -0400
          WAS: Mecrisp on the TI Stellaris Launchpad  IS: Thunderbird Line Breaking rickman <gnuarm@gmail.com> - 2015-04-17 15:12 -0400
            Re: WAS: Mecrisp on the TI Stellaris Launchpad  IS: Thunderbird Line Breaking Martin Gregorie <martin@address-in-sig.invalid> - 2015-04-17 20:14 +0000
              Re: WAS: Mecrisp on the TI Stellaris Launchpad  IS: Thunderbird Line Breaking rickman <gnuarm@gmail.com> - 2015-04-17 16:59 -0400
            Re: WAS: Mecrisp on the TI Stellaris Launchpad  IS: Thunderbird Line Breaking David Brown <david.brown@hesbynett.no> - 2015-04-18 10:00 +0200
              Re: WAS: Mecrisp on the TI Stellaris Launchpad  IS: Thunderbird Line Breaking rickman <gnuarm@gmail.com> - 2015-04-18 09:32 -0400
                Re: WAS: Mecrisp on the TI Stellaris Launchpad  IS: Thunderbird Line Breaking Martin Gregorie <martin@address-in-sig.invalid> - 2015-04-18 15:15 +0000
                Re: WAS: Mecrisp on the TI Stellaris Launchpad  IS: Thunderbird Line Breaking rickman <gnuarm@gmail.com> - 2015-04-18 11:31 -0400
                Re: WAS: Mecrisp on the TI Stellaris Launchpad  IS: Thunderbird Line   Breaking Niklas Holsti <niklas.holsti@tidorum.invalid> - 2015-04-18 19:21 +0300
                Re: WAS: Mecrisp on the TI Stellaris Launchpad  IS: Thunderbird Line   Breaking rickman <gnuarm@gmail.com> - 2015-04-19 16:39 -0400
                Re: WAS: Mecrisp on the TI Stellaris Launchpad  IS: Thunderbird Line Breaking Alan Adams <alan@adamshome.org.uk> - 2015-04-18 18:52 +0100
                Re: WAS: Mecrisp on the TI Stellaris Launchpad  IS: Thunderbird Line Breaking "Rod Pemberton" <bork@lllljunkqwer.cpm> - 2015-04-18 18:55 -0400
                Re: WAS: Mecrisp on the TI Stellaris Launchpad  IS: Thunderbird Line Breaking The Natural Philosopher <tnp@invalid.invalid> - 2015-04-19 09:13 +0100
                Re: WAS: Mecrisp on the TI Stellaris Launchpad  IS: Thunderbird Line Breaking Dimiter_Popoff <dp@tgi-sci.com> - 2015-04-19 13:22 +0300
                Re: WAS: Mecrisp on the TI Stellaris Launchpad  IS: Thunderbird Line Breaking David Brown <david.brown@hesbynett.no> - 2015-04-19 22:09 +0200
          Re: Mecrisp on the TI Stellaris Launchpad mm0fmf <none@mailinator.com> - 2015-04-17 21:15 +0100
            Re: Mecrisp on the TI Stellaris Launchpad rickman <gnuarm@gmail.com> - 2015-04-17 17:02 -0400
              Re: Mecrisp on the TI Stellaris Launchpad mm0fmf <none@mailinator.com> - 2015-04-18 17:06 +0100
                Re: Mecrisp on the TI Stellaris Launchpad rickman <gnuarm@gmail.com> - 2015-04-19 16:57 -0400
                Re: Mecrisp on the TI Stellaris Launchpad Alan Adams <alan@adamshome.org.uk> - 2015-04-20 09:33 +0100
                Re: Mecrisp on the TI Stellaris Launchpad mm0fmf <none@mailinator.com> - 2015-04-20 18:03 +0100
                Re: Mecrisp on the TI Stellaris Launchpad rickman <gnuarm@gmail.com> - 2015-04-21 01:16 -0400
          Re: Mecrisp on the TI Stellaris Launchpad rickman <gnuarm@gmail.com> - 2015-04-17 20:20 -0400
            Re: Mecrisp on the TI Stellaris Launchpad Paul Rubin <no.email@nospam.invalid> - 2015-04-17 17:24 -0700
              Re: Mecrisp on the TI Stellaris Launchpad rickman <gnuarm@gmail.com> - 2015-04-17 20:40 -0400
                Re: Mecrisp on the TI Stellaris Launchpad Paul Rubin <no.email@nospam.invalid> - 2015-04-17 17:57 -0700
            Re: Mecrisp on the TI Stellaris Launchpad David Brown <david.brown@hesbynett.no> - 2015-04-18 10:04 +0200
            Re: Mecrisp on the TI Stellaris Launchpad Jan Coombs <Jan-54 <jenfhaomndgfwutc@murmic.plus.com>> - 2015-04-18 09:38 +0100
              Re: Mecrisp on the TI Stellaris Launchpad rickman <gnuarm@gmail.com> - 2015-04-18 11:04 -0400
                Re: Mecrisp on the TI Stellaris Launchpad David Brown <david.brown@hesbynett.no> - 2015-04-18 17:54 +0200
                Re: Mecrisp on the TI Stellaris Launchpad hal-usenet@ip-64-139-1-69.sjc.megapath.net (Hal Murray) - 2015-04-18 15:36 -0500
                Re: Mecrisp on the TI Stellaris Launchpad Theo Markettos <theom+news@chiark.greenend.org.uk> - 2015-04-23 07:59 +0100
                Re: Mecrisp on the TI Stellaris Launchpad rickman <gnuarm@gmail.com> - 2015-04-25 14:35 -0400
                Re: Mecrisp on the TI Stellaris Launchpad rickman <gnuarm@gmail.com> - 2015-04-25 15:44 -0400
                Re: Mecrisp on the TI Stellaris Launchpad rickman <gnuarm@gmail.com> - 2015-05-08 12:00 -0400
                Re: Mecrisp on the TI Stellaris Launchpad rickman <gnuarm@gmail.com> - 2015-05-10 03:36 -0400
                Re: Mecrisp on the TI Stellaris Launchpad Theo Markettos <theom+news@chiark.greenend.org.uk> - 2015-05-10 10:32 +0100
                Re: Mecrisp on the TI Stellaris Launchpad Tauno Voipio <tauno.voipio@notused.fi.invalid> - 2015-05-10 12:56 +0300
                Re: Mecrisp on the TI Stellaris Launchpad rickman <gnuarm@gmail.com> - 2015-05-10 10:48 -0400
                Re: Mecrisp on the TI Stellaris Launchpad The Natural Philosopher <tnp@invalid.invalid> - 2015-05-10 16:05 +0100
                Re: Mecrisp on the TI Stellaris Launchpad Mark Wills <markwills1970@gmail.com> - 2015-05-10 08:55 -0700
                Re: Mecrisp on the TI Stellaris Launchpad rickman <gnuarm@gmail.com> - 2015-05-10 13:13 -0400
                Re: Mecrisp on the TI Stellaris Launchpad rickman <gnuarm@gmail.com> - 2015-05-10 15:34 -0400
                Re: Mecrisp on the TI Stellaris Launchpad albert@spenarnc.xs4all.nl (Albert van der Horst) - 2015-05-10 11:41 +0000
                Re: Mecrisp on the TI Stellaris Launchpad Theo Markettos <theom+news@chiark.greenend.org.uk> - 2015-05-10 16:56 +0100
                Re: Mecrisp on the TI Stellaris Launchpad rickman <gnuarm@gmail.com> - 2015-05-10 13:01 -0400
      Re: Mecrisp on the TI Stellaris Launchpad stephen@mpeforth.com (Stephen Pelc) - 2015-04-18 19:22 +0000
        Re: Mecrisp on the TI Stellaris Launchpad rickman <gnuarm@gmail.com> - 2015-04-19 17:04 -0400
          Re: Mecrisp on the TI Stellaris Launchpad Tauno Voipio <tauno.voipio@notused.fi.invalid> - 2015-04-20 13:24 +0300
            Re: Mecrisp on the TI Stellaris Launchpad rickman <gnuarm@gmail.com> - 2015-04-22 13:23 -0400
              Re: Mecrisp on the TI Stellaris Launchpad Dimiter_Popoff <dp@tgi-sci.com> - 2015-04-22 20:44 +0300
                Re: Mecrisp on the TI Stellaris Launchpad rickman <gnuarm@gmail.com> - 2015-04-22 13:51 -0400
              Re: Mecrisp on the TI Stellaris Launchpad Waldek Hebisch <hebisch@math.uni.wroc.pl> - 2015-04-22 19:10 +0000
                Re: Mecrisp on the TI Stellaris Launchpad rickman <gnuarm@gmail.com> - 2015-04-22 15:31 -0400
                Re: Mecrisp on the TI Stellaris Launchpad Waldek Hebisch <hebisch@math.uni.wroc.pl> - 2015-04-23 02:08 +0000
                Re: Mecrisp on the TI Stellaris Launchpad Waldek Hebisch <hebisch@math.uni.wroc.pl> - 2015-04-24 02:52 +0000
                Re: Mecrisp on the TI Stellaris Launchpad rickman <gnuarm@gmail.com> - 2015-04-25 14:40 -0400
                Re: Mecrisp on the TI Stellaris Launchpad rickman <gnuarm@gmail.com> - 2015-04-25 15:42 -0400
    Re: Mecrisp on the TI Stellaris Launchpad albert@spenarnc.xs4all.nl (Albert van der Horst) - 2015-04-17 10:52 +0000
      Re: Mecrisp on the TI Stellaris Launchpad Dimiter_Popoff <dp@tgi-sci.com> - 2015-04-17 14:05 +0300
      Re: Mecrisp on the TI Stellaris Launchpad Paul Rubin <no.email@nospam.invalid> - 2015-04-17 07:56 -0700
        Re: Mecrisp on the TI Stellaris Launchpad David Brown <david.brown@hesbynett.no> - 2015-04-17 17:26 +0200
        Re: Mecrisp on the TI Stellaris Launchpad glen herrmannsfeldt <gah@ugcs.caltech.edu> - 2015-04-17 17:01 +0000
    Re: Mecrisp on the TI Stellaris Launchpad Blajrs Jrolrsen <boegre@no.com> - 2015-04-17 13:36 +0000
      Re: Mecrisp on the TI Stellaris Launchpad anton@mips.complang.tuwien.ac.at (Anton Ertl) - 2015-04-17 14:42 +0000
        Re: Mecrisp on the TI Stellaris Launchpad Hans-Bernhard Bröker <HBBroeker@t-online.de> - 2015-04-18 00:25 +0200
          Re: Mecrisp on the TI Stellaris Launchpad rickman <gnuarm@gmail.com> - 2015-04-17 20:03 -0400
            Re: Mecrisp on the TI Stellaris Launchpad Paul Rubin <no.email@nospam.invalid> - 2015-04-17 17:14 -0700
              Re: Mecrisp on the TI Stellaris Launchpad rickman <gnuarm@gmail.com> - 2015-04-17 20:26 -0400
                Re: Mecrisp on the TI Stellaris Launchpad Paul Rubin <no.email@nospam.invalid> - 2015-04-17 17:32 -0700
                Re: Mecrisp on the TI Stellaris Launchpad rickman <gnuarm@gmail.com> - 2015-04-17 20:47 -0400
                Re: Mecrisp on the TI Stellaris Launchpad albert@spenarnc.xs4all.nl (Albert van der Horst) - 2015-04-18 08:47 +0000
                Re: Mecrisp on the TI Stellaris Launchpad rickman <gnuarm@gmail.com> - 2015-04-18 11:19 -0400
                Re: Mecrisp on the TI Stellaris Launchpad albert@spenarnc.xs4all.nl (Albert van der Horst) - 2015-04-18 15:52 +0000
                Re: Mecrisp on the TI Stellaris Launchpad rickman <gnuarm@gmail.com> - 2015-04-19 17:07 -0400
                Re: Mecrisp on the TI Stellaris Launchpad rickman <gnuarm@gmail.com> - 2015-06-09 03:04 -0400
            Re: Mecrisp on the TI Stellaris Launchpad Robert Wessel <robertwessel2@yahoo.com> - 2015-04-18 00:11 -0500
            Re: Mecrisp on the TI Stellaris Launchpad David Brown <david.brown@hesbynett.no> - 2015-04-18 10:32 +0200
              Re: Mecrisp on the TI Stellaris Launchpad rickman <gnuarm@gmail.com> - 2015-04-18 11:26 -0400
                Re: Mecrisp on the TI Stellaris Launchpad David Brown <david.brown@hesbynett.no> - 2015-04-18 17:57 +0200
                Re: Mecrisp on the TI Stellaris Launchpad Paul Rubin <no.email@nospam.invalid> - 2015-04-18 09:42 -0700
                Re: Mecrisp on the TI Stellaris Launchpad rickman <gnuarm@gmail.com> - 2015-04-19 17:11 -0400
            Re: Mecrisp on the TI Stellaris Launchpad Hans-Bernhard Bröker <HBBroeker@t-online.de> - 2015-04-18 12:19 +0200
              Re: Mecrisp on the TI Stellaris Launchpad Dimiter_Popoff <dp@tgi-sci.com> - 2015-04-18 15:16 +0300
                Re: Mecrisp on the TI Stellaris Launchpad David Brown <david.brown@hesbynett.no> - 2015-04-18 19:57 +0200
                Re: Mecrisp on the TI Stellaris Launchpad Dimiter_Popoff <dp@tgi-sci.com> - 2015-04-18 23:11 +0300
                Re: Mecrisp on the TI Stellaris Launchpad David Brown <david.brown@hesbynett.no> - 2015-04-19 21:32 +0200
                Re: Mecrisp on the TI Stellaris Launchpad Dimiter_Popoff <dp@tgi-sci.com> - 2015-04-19 23:04 +0300
          Re: Mecrisp on the TI Stellaris Launchpad anton@mips.complang.tuwien.ac.at (Anton Ertl) - 2015-04-18 09:15 +0000
            Re: Mecrisp on the TI Stellaris Launchpad David Brown <david.brown@hesbynett.no> - 2015-04-18 12:17 +0200
              Re: Mecrisp on the TI Stellaris Launchpad anton@mips.complang.tuwien.ac.at (Anton Ertl) - 2015-04-18 13:08 +0000
                Re: Mecrisp on the TI Stellaris Launchpad David Brown <david.brown@hesbynett.no> - 2015-04-18 20:17 +0200
                Re: Mecrisp on the TI Stellaris Launchpad anton@mips.complang.tuwien.ac.at (Anton Ertl) - 2015-04-20 15:33 +0000
      Re: Mecrisp on the TI Stellaris Launchpad rickman <gnuarm@gmail.com> - 2015-04-17 14:52 -0400
      Re: Mecrisp on the TI Stellaris Launchpad albert@spenarnc.xs4all.nl (Albert van der Horst) - 2015-04-17 20:06 +0000

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