[FiXos][C]FXSH : FiXos SHell

[Snektron]

but Fixos is just a shell, not? so it doesn't remove the os

[Duke "Tape" Eiyeron]

Nah, FiXos is a posix-like kernel. FXSH is a shell running on top of it.

I'm currently adding manual environment variable management as FiXos doesnt' have it at thisoment. This we have almost a PWD and CD working. Almost.

EDIT : It works! It has problems (no cd .. or ls relative subfolder) but it works!

[Dream of Omnimaga]

Wait, I am confused now. Does FiXoS remove the OS or not?

[Duke "Tape" Eiyeron]

Let's be clear : The bootloader loads FiXos in the RAM and overrides tempoary the running system to FiXos. It does not change the ROM nor the Flash. A simple reboot and you'll get back on good old Casio OS.

At the moment, here are the cd/ls command statuses :

Code Select Expand


# These kind of commands will work
$ ls
$ ls path
$ cd # go back to / as we don't have any /home
$ cd relative/path
$ cd /absolute/path
# These commands will throw a planned error
$ ls inexsistant/folder (relative or aboslute)
$ cd inexsistant/folder (relative or aboslute)
#That won't work and I have to fix that
$ cd ..
$ cd ./machin...
$ ls existing/file (I stole the function from Kristaba and I should just add the case where I only want to list a file and not the whole folder.)


[Dream of Omnimaga]

Oooh I see now. That's better then. I didn't want to get rid of the Casio OS.

[Duke "Tape" Eiyeron]

You don't really want to at this moment.

Edit : as the kernel grew to have sysctl, one can collect miscallenous informations like the kernel name, the running processes and some others things. I adapted Kristaba's uname example into a built-in and I'm porting his top example into something usable and not something that can't be stopped.

[Dream of Omnimaga]

Eiyeron bump the topic when you have updates tho. It's easier to notice.

Nice, though. I can't wait to see some functionalities in action.

[Duke "Tape" Eiyeron]

I don't have much to show you. It's mainly to see a working user environment. Once we'll have a decent framework running, we'll be able to show off with fun programs. I can't wait to get to fun things like programming the graphical system which will permit us to use MonochromeLib as a dynamic library or implementing better cursor movement.

[Dream of Omnimaga]

Good luck then. And being able to use MonochromeLib would definitively be nice

[Duke "Tape" Eiyeron]

It's not for now, heh, the kernels is keep growing up. We have much more important code to do, but heck, once dynamic libraries are done, it'll help a lot : lighter executables, a only version to manage, a clean system to program on (quite unstable I must say but we're trying to fix that).

[Duke "Tape" Eiyeron]

I added three main things:
- Now the project include a init program which is executed by the kernel. Init will manage FXSH's execution and will reboot it if it was exited. It also manage a session for FXSH to make it able to pass signals to child processes.
- FXSH will trap signals and avoid getting killed by them.
- As now signals are correctly working, looping programs will be able to be stopped sending a terminal signal to them (EXIT to send ^C).

Thus, Kristaba's minimalistic top has been added as builtin and can be stopped by pressing EXIT, FXSH won't be stopped by signals which init set up correctly for them. It's a good day.

[Dream of Omnimaga]

Ooh, a command to force exit programs stuck into an endless loop would definitively be nice. In Axe language, I sometimes found myself unable to exit programs I was debugging because of endless loops x.x

[Snektron]

Maybe it's possible for someone to create an axiom with an on interrupt that force exits axe... though that would be quite a challenge xD

[Dream of Omnimaga]

I guess this could be suggested, although I am unsure if many people here still program axioms. It also depends of if it's possible at all.

[Duke "Tape" Eiyeron]

Hum. It's POSIX signals. A program can stil ltrap the signals and do whatever they want to do once they occur. A program can ignore them or have a callback to do something before they quit or continue.