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I've bought a new laptop DELL Inspiron i3 5th gen 3000 series. On my first login, even before restarting, I tried to apply updates and I got the error 

locale: Cannot set LC_CTYPE to default locale: No such file or directory
locale: Cannot set LC_ALL to default locale: No such file or directory

It was so nagging to see this because I was using a Compaq laptop earlier and I had the same error, which I could never fix.

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  • 1
    Did you install Ubuntu yourself or was it pre-installed? Anyway, can you please open a terminal window, run the locale command, and show us the complete output by editing your question.
    – Gunnar Hjalmarsson
    Feb 9, 2017 at 23:48

3 Answers 3

Reset to default
13

Insert into /etc/default/locale:

LC_CTYPE="en_US.UTF-8"
LC_ALL="en_US.UTF-8"
LANG="en_US.UTF-8"

And regarding the missing locales, to generate them: sudo dpkg-reconfigure locales

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  • 3
    Rather than commenting, edit your post to add the information.
    – user423626
    Mar 16, 2017 at 9:14
  • 1
    willdo next time
    – Galvani
    Mar 17, 2017 at 11:15
4

This one worked for me. 

sudo -i
locale
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
dpkg-reconfigure locales
reboot
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0

This worked for me (On Ubuntu 14.04 - but probably works on other systems)

sudo localedef -v -c -i en_US -f UTF-8 en_US.UTF-8
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