Disconnect from shell

[patrik]

How do you do to disconnect your program from the current shell and continue running it in the background?

The idea would be to only start running in the background if certain conditions are met, like a unix daemon.

The CED editor does something this, it even allows you to close the shell you started it from while it is running.

[ajk]

Try

run >NIL: command

[meynaf]

Originally Posted by ajk

Try

run >NIL: command

This does not allow to close the shell.
To make a real self-detaching program, you have to programmatically run your program (with some way for it to identify it's rerun out of the cli), then quit the original one (dunno if this is clear ).

[hooverphonique]

I've done this in the past. As far as I remember, I did something like:

add extra code section to start of program/seglist which detaches the following sections from the seglist and then creates a new process based on the detached sections, then exits. There may be some details about setting standard input/output for the new process also, I don't remember.

[Leffmann]

Redirecting output to NIL: like ajk says works, so if your program doesn't need to print anything in the shell before it detaches, that's your simple solution.

There's also a program on Fish 399, TrackDisplay by Olaf Barthel, which shows how to programmatically detach from the CLI, allowing you to close it afterwards.

[patrik]

Thanks for the TrackDisplay example, that's exactly what I want to do!