I’ve set up the serial port in VirtualBox as shown in the screenshot.

Now I’d like to send a string from the AROS Shell that would be saved to serial_output.txt

I tried this:
echo "test" >SER:
but it didn’t work...

Does anyone know how to do this? Perhaps some additional configuration is required?

Hello,

You want to output from the AROS shell to the host serial_output.txt file through the virtual serial port.

I use this Virtualbox feature to catch the early AROS debug log with debug=all,serial at the end of the multiboot2 grub line.

But, once AROS is up and running you can write live to the debug log with the KEcho command, in Developer:Debug/
For instance, in my case,
KEcho hello from Aros shell
returns in the serial_output.txt file:
0000003516f1c08d 0x000000007eb30170 | 000 | hello from Aros shell

There was a number of bugs on this codepath, but eventually I managed to get

echo "a" >SER1:

to work (SER0: is blocked for serial debug on PC builds)

(PS. fixes are not yet in the repo)

Thanks, Deadwood, great job as always

Ok, the fixes are now in the repository. It is now possible to output text from shell to COM2 using

echo "text" >SER1:

Note: COM1 (SER0:) is allocated to serial debug and trying to send characters to it through same method won't work (Unit 0 of serial.device won't open).