Linux

48090 readers

804 users here now

From Wikipedia, the free encyclopedia

Linux is a family of open source Unix-like operating systems based on the Linux kernel, an operating system kernel first released on September 17, 1991 by Linus Torvalds. Linux is typically packaged in a Linux distribution (or distro for short).

Distributions include the Linux kernel and supporting system software and libraries, many of which are provided by the GNU Project. Many Linux distributions use the word "Linux" in their name, but the Free Software Foundation uses the name GNU/Linux to emphasize the importance of GNU software, causing some controversy.

Rules

Posts must be relevant to operating systems running the Linux kernel. GNU/Linux or otherwise.
No misinformation
No NSFW content
No hate speech, bigotry, etc

Related Communities

Community icon by Alpár-Etele Méder, licensed under CC BY 3.0

founded 5 years ago

MODERATORS

[email protected]

How can I launch a program from a bash XTerm and run a while loop at the same time? (lemmy.world)

submitted 9 months ago by [email protected] to c/[email protected]

18 comments fedilink hide all child comments

I want to launch Oobabooga Textgen WebUI from the command line with its serial output. I also want to run a while loop that retrieves the Nvidia GPU memory available and temperature for display on the header bar with a 5 second sleep delay. How do I run both of those at the same time?

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

[–] [email protected] 13 points 9 months ago (1 children)

I'm having trouble understanding the question.

while true; do update-header-bar-or-whatever; sleep 5; done &
oogabooga

... will run the header update every 5 seconds, while oogabooga is running. Is that what you want?

[–] [email protected] 2 points 9 months ago (2 children)

If I launch like that it would stop at the oobabooga app launch until the job completed then it would resume the loop.

Ultimately, I'm doing more complex stuff and simplifying the question so it may seem slightly overkill to say I need it to work like this. I want to do some container checks, setup, and launch multiple applications with my own parsing flags and some conditional sourcing.

This only part I can't seem to grasp very well is how to run that little loop and update the header while other stuff launches with its serial terminal set to the same one the loop is running inside.

[–] [email protected] 1 points 9 months ago

If you're doing more complex stuff, maybe spend a few days learning the basics of bash

[–] [email protected] 12 points 9 months ago* (last edited 9 months ago)

$ while true; do echo Hello, I updated the header; sleep 5; done &
[1] 1631507
$ Hello, I updated the header
sleep 30; echo Sleep is done.
Hello, I updated the header
Hello, I updated the header
Hello, I updated the header
Hello, I updated the header
Hello, I updated the header
Hello, I updated the header
Hello, I updated the header
Sleep is done.
Hello, I updated the header
$ kill %1
[1]+  Terminated              while true; do
    echo Hello, I updated the header; sleep 5;
done
$

Edit: I'm fairly confident now that you're just thinking the loop will stop when you run oogabooga, but that's not how it works. That up above is how it works; the loop keeps going during the sleep with them both going on the same terminal, then after the sleep process terminates, I kill the loop, but for the whole 30 seconds previous, they were both going. It'll be the same with oogabooga. This the situation you're asking about, yes?