FreeCodeCamp/linux

This is the best place to discuss Linux and get help with it. Be sure to check out https://github.com/freecodecamp/freecodecamp/wiki/linux for more.

Christopher Jaeger

@caJaeger

Oh I thought it needed to be explicitly exported to be read

Hussam Al-Tayeb

@ht990332

just childprocess will do

Christopher Jaeger

@caJaeger

huh. Okay, I definitely thought I had a handle on how that works but apparently not!

Hussam Al-Tayeb

@ht990332

here is a simple example https://pastebin.com/raw/9EkYkf7z

Hussam Al-Tayeb

@ht990332

now if you want your variables to be available only to the subcommand, you can wrap it in a function() and use "local myvar=value" then run 'function'

Carlos Valdez

@carlos_lvm_twitter

I have a question, is it possible to create interactive pdf forms with LaTeX?

Buğra

@BgR8

hi while i run the Yolo v4 COCO - WebCam 0: darknet detector demo cfg/coco.data cfg/yolov4.cfg yolov4.weights -c 0 terminal shows me GStreamer warning: GStreamer: pipeline have not been created and after that VIDIOC_QBUF: Invalid argument

or Yolo v4 COCO for net-videocam - Smart WebCam: darknet detector demo cfg/coco.data cfg/yolov4.cfg yolov4.weights http://192.168.0.80:8080/video?dummy=param.mjpg or another ip that android camera give and it shows me in red text "Connection to tcp://ipadress failed: No route to host and after that Video-stream stopped!

on Nvidia Jetson TX2

Guney01

@Guney01

hello dear , can anybody help me for .js app installer problem

https://ibb.co/GVQVjxT

my problem is on the screenshot

Carlos Valdez

@carlos_lvm_twitter

Does anybody have exp with brainfuck programming language?

Nadia

@nadiaschutz

is there a way to install linux on mac without erasing any data?

(◕‿‿◕｡)

@yuumami97

@nadiaschutz You may try using a virtual machine, I use it for testing linux stuffs a lot

Nadia

@nadiaschutz

@yuumami97 thank you! forgot about this at all haha.

Jayce

@jaycethanks

hi friends

I have a question ,anybody can have a look

why the hostname are different between /etc/hostname file and the prompt notifier

Buğra

@BgR8

hi, how to plug Raspberry Pi Camera v2.1 to Jetson TX2

Buğra

@BgR8

hi, i want to write an application with PyQt5 or etc. on ubuntu and want to run like a calculator, office program, just click and launch, i mean launch not via terminal, not like python3 gui.py on terminal

Hussam Al-Tayeb

@ht990332

@jaycethanks Why is /etc/hostname two lines?

Carlos Valdez

@carlos_lvm_twitter

does anyone have experience with JACK?

Francis Rodrigues

@francisrod01

Hi there, please I need help to setup Chinese keyboard to my Debian stretch.

WebGearMT

@WebGearMT

Hi everyone! I've got a little concern here.

I'm running linux mint and have upgraded from 19.3 to 20. During the upgrade a lot of errors appeared, one of them is this one:

Unhandled Exception:
System.TypeInitializationException: The type initializer for 'Sys' threw an exception. ---> System.DllNotFoundException: System.Native assembly:<unknown assembly> type:<unknown type> member:(null)

Here's the full stack trace:

Unhandled Exception:
System.TypeInitializationException: The type initializer for 'Sys' threw an exception. ---> System.DllNotFoundException: System.Native assembly:<unknown assembly> type:<unknown type> member:(null)
  at (wrapper managed-to-native) Interop+Sys.LChflagsCanSetHiddenFlag()
  at Interop+Sys..cctor () [0x00000] in <12b418a7818c4ca0893feeaaf67f1e7f>:0 
   --- End of inner exception stack trace ---
  at System.IO.FileSystem.FileExists (System.ReadOnlySpan`1[T] fullPath, System.Int32 fileType, Interop+ErrorInfo& errorInfo) [0x0000f] in <12b418a7818c4ca0893feeaaf67f1e7f>:0 
  at System.IO.FileSystem.FileExists (System.ReadOnlySpan`1[T] fullPath) [0x00006] in <12b418a7818c4ca0893feeaaf67f1e7f>:0 
  at System.IO.File.Exists (System.String path) [0x00058] in <12b418a7818c4ca0893feeaaf67f1e7f>:0 
  at Mono.Tools.Driver.LoadConfig (System.Boolean quiet) [0x00031] in <c1f3f44c980c4c748aff61945c8f618f>:0 
  at Mono.Tools.Driver.Main (System.String[] args) [0x00347] in <c1f3f44c980c4c748aff61945c8f618f>:0 
[ERROR] FATAL UNHANDLED EXCEPTION: System.TypeInitializationException: The type initializer for 'Sys' threw an exception. ---> System.DllNotFoundException: System.Native assembly:<unknown assembly> type:<unknown type> member:(null)
  at (wrapper managed-to-native) Interop+Sys.LChflagsCanSetHiddenFlag()
  at Interop+Sys..cctor () [0x00000] in <12b418a7818c4ca0893feeaaf67f1e7f>:0 
   --- End of inner exception stack trace ---
  at System.IO.FileSystem.FileExists (System.ReadOnlySpan`1[T] fullPath, System.Int32 fileType, Interop+ErrorInfo& errorInfo) [0x0000f] in <12b418a7818c4ca0893feeaaf67f1e7f>:0 
  at System.IO.FileSystem.FileExists (System.ReadOnlySpan`1[T] fullPath) [0x00006] in <12b418a7818c4ca0893feeaaf67f1e7f>:0 
  at System.IO.File.Exists (System.String path) [0x00058] in <12b418a7818c4ca0893feeaaf67f1e7f>:0 
  at Mono.Tools.Driver.LoadConfig (System.Boolean quiet) [0x00031] in <c1f3f44c980c4c748aff61945c8f618f>:0 
  at Mono.Tools.Driver.Main (System.String[] args) [0x00347] in <c1f3f44c980c4c748aff61945c8f618f>:0 
W: removing assembly: policy.2.10.glib-sharp, Version=0.0.0.0, Culture=neutral, PublicKeyToken=35e10195dab3c99f failed!

It threw out this stack trace a couple of times until it eventually stopped and continued. The part that worries me a bit is the part that says (basically the same as the message at the beginning of the stack trace, only with the words fatal unhandled):

[ERROR] FATAL UNHANDLED EXCEPTION: System.TypeInitializationException: The type initializer for 'Sys' threw an exception. ---> System.DllNotFoundException: System.Native assembly:<unknown assembly> type:<unknown type> member:(null)

However, I restarted my pc after the upgrade was done and I had no issues. it does however throw out a bunch of errors in a terminal which ends up in a login request asking for my password, then suddenly dissapearing and starting like normal.

I searched this error and found solutions that entailed that I might have to downgrade back to 19.3 and restart the upgrade. So far however I had no serious issues but I'm worried that I might have some later on, is this serious? Do I still need to downgrade back to 19.3 or can it be easily fixed?

Here's my system info if it might help:

OS: Linux Mint 20 (Ulyana)
Architecture: AMD 64 bit

thanks in advance!

chama-chomo

@chama-chomo

@WebGearMT looks like some Mono related stuff, I wouldn't be too much worried about it unless you use it

https://community.linuxmint.com/software/view/mono-runtime

WebGearMT

@WebGearMT

@chama-chomo ok, thanks

Buğra

@BgR8

hey, when i run import numpy as np for python3 in ubuntu terminal it shows illegal instruction (core dumped)

GcoderK

@GcoderK_twitter

Hi. I'm finally making the shift from Win 10 to Linux. I have tried Linux mint in the past, with a dual boot. Now I'm going all in with Linux. Any distro suggested for the beginners? I'd shortlisted to Ubuntu, Linux Mint & Pop OS. And I'm leaning towards Pop OS. Any other distro suggestion for a novice? I understand that it is a personal preference. Yet I wanted to know the pulse.

Hussam Al-Tayeb

@ht990332

@GcoderK_twitter this depends on why you want to use Linux and your previous workflow on Windows

I would go for ubuntu 2

20.04

Or Oracle linux 8

GcoderK

@GcoderK_twitter

@ht990332 Thanks for the inputs. I've moved to Pop!_OS, based on Ubuntu, with lean GNOME. So far, I'm loving it.

Hussam Al-Tayeb

@ht990332

nice. have fun.

edisonlu

@edisonlu

hello, everybody

is anyone here?

igorgolm

@igorgolm

jep :)

Hussam Al-Tayeb

@ht990332

AngeloFly

@AngeloFly

hi guys. i am beginner. Hope to communicate with everyone

deepakravibabu

@deepakravibabu

Hi,
I am using petalinux to build linux image for my zynq board. Can anyone please let me know how I can tell petalinux to include kernel-headers in the image file generated.

Arkankhan Pathan

@arkankhan-ak

Hello, I am facing problem in mint linux once i have restarted my machine, 'a start job is running until boot process finishes up'

If anyone of you can help me out i will be thankful to you !

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