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Date: Thu, 28 Jul 2005 09:38:35 -0400 (EDT)
From: Igor Pechtchanski <pechtcha AT cs DOT nyu DOT edu>
Reply-To: cygwin AT cygwin DOT com
To: Ken Dibble <kdibble AT alltel DOT net>
cc: cygwin AT cygwin DOT com
Subject: Re: suggestions for cygwin developers
In-Reply-To: <42E8B7CA.6080602@alltel.net>
Message-ID: <Pine.GSO.4.61.0507280925550.27026@slinky.cs.nyu.edu>
References: <9bbd279405072717252b3e0690 AT mail DOT gmail DOT com> <42E8A1DA DOT 20605 AT atomice DOT net>  <42E8B7CA DOT 6080602 AT alltel DOT net>
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On Thu, 28 Jul 2005, Ken Dibble wrote:

> Chris January wrote:
>
> > Alex Goldman wrote:
> >
> > > When Cygwin gets set up, it would be more user-friendly if it placed
> > > two icons on the desktop:
> > > one should start maximized Rxvt; another should start X with a
> > > couple of xterms or whatever.
> > > First-time users might think that the MS-DOS terminal is as good as
> > > it gets, and this is not good for Cygwin. Others still have to
> > > figure out how to start Rxvt automatically and how to configure it
> > > to look pretty.
> > >
> > > Also, it would be neat to be able to keep Cygwin up-to-date
> > > automatically.
> >
> > How about a prompt when a new Cygwin DLL version is available:
> >
> > A new version of Cygwin is available. Run setup to install the latest
> > version.
> >
> > This could be included as part of the /etc/profile or something.
> >
> > Chris
>
> Checking to see if a new version available assumes an internet
> connection. My opinion is that this would play havoc with dial-up users.

Agreed.  I would guess it could be a small service (a nice implementation
would even put an icon in the system tray).

> If this is something you want, here is a  hack to accomplish it.
> I'm sure there are better, cleaner ways to do this and it will break
> as soon as something in the package list changes, but it's 5 am
> and I am not ready to think yet.

While the effort of actually writing code at 5am is commendable
(especially since you said "yet" -- the only time you'd see *me* writing
code at 5am is if I'd been doing it all night :-) ), the code below does
do some wasteful things.

> #!/bin/bash
>
> #Igor's whichpkg
> function whichpkg() {
>  wget -qO- "http://cygwin.com/cgi-bin2/package-grep.cgi?grep=$1" | \
>    sed -ne '/Cygwin Package List/,${s#</\?[^<]*>##g;p}'
> }

You could also simply 'wget -qO- "http://cygwin.com/packages/cygwin"' and
find the last line that starts with "cygwin".  That would be *wa-ay*
faster.

> LATEST=`whichpkg cygwin | grep "emulation" | tail -1 |  awk -F "-" '{print $2}'`

Even if you do use the "whichpkg" above, it's probably better to search
for 'cygwin1\.dll'... :-)

Besides, this would lose the Cygwin-specific release number.

> CUR=`uname -a | awk '{print $3}' | awk -F"(" '{print $1}'`

CUR=`uname -r | awk -F"(" '{print $1}'`

or

CUR=`cygcheck -cd cygwin | sed -ne 's/^cygwin\s\+// p'`

Both will not do the right thing if you have a snapshot installed.  You'll
have to think about what exactly the "right thing" is in this case.

> if [ $CUR != $LATEST ]; then
>  echo "new cygwin dll version "$LATEST" available"
> else
>  echo "Your cygwin dll is current"
> fi

Again, you need to also deal with snapshots.

But if this were written in C, run as a service, and extended to all
installed packages, it could be the beginning of something useful. :-)
	Igor
-- 
				http://cs.nyu.edu/~pechtcha/
      |\      _,,,---,,_		pechtcha AT cs DOT nyu DOT edu
ZZZzz /,`.-'`'    -.  ;-;;,_		igor AT watson DOT ibm DOT com
     |,4-  ) )-,_. ,\ (  `'-'		Igor Pechtchanski, Ph.D.
    '---''(_/--'  `-'\_) fL	a.k.a JaguaR-R-R-r-r-r-.-.-.  Meow!

If there's any real truth it's that the entire multidimensional infinity
of the Universe is almost certainly being run by a bunch of maniacs. /DA

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