I recently installed Ubuntu 12.10 by keeping the home folders from Linux Mint 13 distribution. The system installed fine, but at the beginning everything was in Chinese (even the text in the Terminal). I managed to solve that by editing some files, but I still get an error whenever a command is not found in Terminal. Here it is:

Sorry, command-not-found has crashed! Please file a bug report at:
Please include the following information with the report:

command-not-found version: 0.3
Python version: 3.2.3 final 0
Distributor ID: Ubuntu
Description:    Ubuntu 12.10
Release:    12.10
Codename:   quantal
Exception information:

unsupported locale setting
Traceback (most recent call last):
  File "/usr/lib/python3/dist-packages/CommandNotFound/util.py", line 24, in crash_guard
  File "/usr/lib/command-not-found", line 69, in main
  File "/usr/lib/command-not-found", line 40, in enable_i18n
locale.setlocale(locale.LC_ALL, '')
  File "/usr/lib/python3.2/locale.py", line 541, in setlocale
return _setlocale(category, locale)
locale.Error: unsupported locale setting

How can I get rid of this error. It says that it is a locale error, so I guess it might be related to the initial language problem, but I'm not an expert in linux stuff. What is your opinion?

  • 2
    Cool that you found a solution and decided to share it. Let it stay, no need to delete good information :) Commented Oct 23, 2012 at 19:37
  • This is a perfectly good question, since the crash is separate from the main issue. command-not-found is run when you try to run a command that does not exist (cannot be found). However, I do recommend reporting the bug. If you can reproduce it, I recommend using Apport to send the report. Otherwise, you can still report the bug with the complete error message there (it contains the trace, which will likely be usable by developers to figure out the source of the problem). Before reporting it, please see help.ubuntu.com/community/ReportingBugs. Commented Mar 21, 2013 at 14:34

2 Answers 2


I had the same problem, but found the following solution over at ubuntuforums:

export LANGUAGE=en_US.UTF-8
export LANG=en_US.UTF-8
export LC_ALL=en_US.UTF-8
locale-gen en_US.UTF-8
sudo dpkg-reconfigure locales
  • 2
    worked for me too, thx a lot!
    – GorillaMoe
    Commented Jul 19, 2013 at 20:22
  • 2
    I can confirm that this is the working solution for 13.10 (x64)
    – shredding
    Commented Nov 4, 2013 at 14:10
  • 1
    This work!!!!!!
    – GusDeCooL
    Commented Nov 8, 2013 at 19:46
  • It doesn't work for me - but then, I'm using en_GB.UTF-8 Any other suggestions?
    – hippyjim
    Commented Apr 12, 2014 at 7:32

I looked at /etc/default/locale and some of the language options were in Chinese. I removed those and added the following and everything is good now:

  • 3
    No need to delete the post.
    – nanofarad
    Commented Oct 23, 2012 at 19:31
  • 1
    Another solution, which worked for me: sudo locale-gen lt_LT.UTF-8
    – Pijusn
    Commented May 24, 2013 at 17:42

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