0

I'm working on Ubuntu 14.04.4 LTS (GNU/Linux 3.13.0-88-generic x86_64) server.

I ran below code to get my GUI set up:

sudo apt-get update
sudo apt-get install ubuntu-desktop

I need to read the stderr to find issue I'm running and debug further.

I'm new to Ubuntu system. How and where can find & read stderr file for further debugging.

Any help is appreciated!

Improve this question
7
  • These file are found in the /var/log directory, look in there!
    – George Udosen
    Sep 29, 2017 at 12:19
  • thanks, @George I did cd /var/log I see a bunch of files or directories but no STDERR. Appreciate if you could help me further
    – Friendof Afriend
    Sep 29, 2017 at 12:22
  • In there you find files with output stuffs from different processes so what you call stderr will be found in one of those files depending on which process generated that error, and you can create custom error logs in there too
    – George Udosen
    Sep 29, 2017 at 12:24
  • 2
    stderr is a stream - unless you explicitly redirect it to a file, it is normally output to the terminal in which you run a command. What exactly do you think you are missing?
    – steeldriver
    Sep 29, 2017 at 12:26
  • If your debugging a process you created then you need to use the Ubuntu redirect to pass the errors to any file and location of your liking
    – George Udosen
    Sep 29, 2017 at 12:29

1 Answer 1

Reset to default
2

If you want to debug some command using its error messages you should do the following command 2>debug.txt - thus all information from STDERR stream about errors will be saved in file named debug.txt.

Improve this answer
5
  • Thanks a bunch man. Im new to ubuntu, sorry for not understanding completely. As mentioned I'm using ubuntu server so my web application is sending the error. The error I'm looking for is LAUNCHY_DEBUG . how would I need to do it with command 2>debug.txt and from where? Thanks a bunch
    – Friendof Afriend
    Sep 29, 2017 at 12:35
  • Is it a PHP application or something else?
    – M. Dm.
    Sep 29, 2017 at 12:39
  • Its a Ruby application
    – Friendof Afriend
    Sep 29, 2017 at 12:40
  • I have no experience using Ruby but you can try to follow this article: stackoverflow.com/questions/3955688/how-do-i-debug-ruby-scripts. I hope, it will help you.
    – M. Dm.
    Sep 29, 2017 at 12:43
  • For the error, you don't need to know Ruby, I've already set everything up. Only thing I need to know is how and where to view my log. appreciate your time
    – Friendof Afriend
    Sep 29, 2017 at 12:45

You must log in to answer this question.

Not the answer you're looking for? Browse other questions tagged .