Linux

15354 readers

176 users here now

A community for everything relating to the GNU/Linux operating system (except the memes!)

Also, check out:

Original icon base courtesy of lewing@isc.tamu.edu and The GIMP

founded 3 years ago

MODERATORS

Ategon@programming.dev

anzo@programming.dev

dwraf_of_ignorance@programming.dev

Delegate a process to a file, for later reattachment? (feddit.uk)

submitted 1 week ago* (last edited 1 week ago) by tetris11@feddit.uk to c/linux@programming.dev

26 comments fedilink hide all child comments

Is such a think possible under Linux?

Yeah I know I can tmux / nohup, and I know that if I dig deep enough I can manually reattach some of the file descriptors under /proc to get a working terminal for that process again....

... but is there a tool that automatically does this somehow?

e.g.

run -d ./bash long-running.sh  >  proc.file
### later
run -a  proc.file

Edit: Y'all really know how to recreate the feeling of StackOverflow circa 2018

you are viewing a single comment's thread
view the rest of the comments

[–] just_another_person@lemmy.world 2 points 6 days ago* (last edited 6 days ago) (1 children)

But what's in this file?

If you're just shuffling data around, use a database.

[–] tetris11@feddit.uk -1 points 6 days ago (1 children)

Log data, current status of a run, timestamp of an error, you name it.

These are oneshots. Of course you could use a proper workflow system with data provenance and lineage tracking baked in, but during the dev cycle of something new you usually want to play around and gather metrics first without worrying first about the architecture.

Please don't X/Y me.

[–] just_another_person@lemmy.world 2 points 5 days ago (1 children)

You're right. A data ase would be absolutely stupid. Use a log shipping library instead.

Also, don't A/B me.

[–] tetris11@feddit.uk 1 points 5 days ago (1 children)

Don't both require me to know the nature of the data beforehand?

Please don't B/M on me

[–] just_another_person@lemmy.world 1 points 4 days ago (1 children)

No. https://www.man7.org/linux/man-pages/man1/logger.1.html

[–] tetris11@feddit.uk 1 points 4 days ago (1 children)

Oh a systemd-logger, I dont have access to the logs, only the admin does. Plus I can't reattach to the process that way

[–] just_another_person@lemmy.world 2 points 4 days ago (1 children)

You can use it to log to a defined file in userspace. You don't need to "reattach" to the process because all of the output goes through this util. Use signal handling to control the process.

[–] tetris11@feddit.uk 1 points 4 days ago

You're probably right that that's likely enough for non-interactive tools