🚀 go-pugleaf

Anyone use zsh? It's a really excellent shell. But it's huge and I don't
realistically expect there ever to be a version for GNO.

There are a few things from zsh that would be nice for GNO, though. For instance

echo `qtime`         - replaces `qtime` with the standard output from qtime,
                       then passes that as a paramater to echo.

You could do the same thing with just qtime, but there are cases when it's not
that simple (I can't remember now, of course :), but I would have used that
once a while ago)

Also, history substitutions. If, for example, you want to add an alias to
your system, you do this.

alias stuff otherstuff
echo !1 >>~/gshrc               - echo the previous line to the file.

!1 means first line in the history, !2, the second, and so on.

gsh also needs a way to run a series of proceses in the background, but
sequentially.

process1 & process2 & process3 &

will start them all up simultaneously, I think. You should be able to do....

( process1 ; process2 ; process3 ) &

run them one after the other.

Also, this is a little less related to shells, but how do you do this...

Say you have a background process and you want to change a paramater or
something. A pipe through which data can be sent to it? No: the pipe would
have had to be created when the process was and hooked to some other process
(well, there's always named pipes, but...). I suspect that UNIX processes do
this by making you put them in the foreground temporarily. It would change
modes, accept commands, then go back into the background and continue what it
was doing. But this sounds like it has a few little problems. Like it doesn't
really work well from within a program. The most logical thing to do, from, for
example, C, would be something along the lines of...

  open(something-that-lets-you-write-data-to-a-process)
  write(with-the-fd-you-got-from-open)

That's named pipes as UNIX implements them, isn't it?

Well, most of that stuff is a wish list anyway.

---
RE: gsh not connected to the kern.

Who intercepts the ORCA Execute call (system() in C). I thought kern took care
of all intercepting of things, but that command sting has to make it to gsh
somehow for parsing and execution... What is there are several shells running?
Who gets the Execute call? 

Gotta change my sig now.....
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| Phillip Vandry | Vandry@Cam.Org | Merry Christmas II you!            |
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