How to change apps default language on Debian?

Question

I have an arm-based computer(nanopi) that is Chinese, so the default language of iceweasle is Chinese(it shows the results of search by google's Chinese engine) how can I fix that and remove Chinese language and set English to default?

Answer 1

To check available locale run locale -a , to change the locale e,g: ENG , add the following line to your ~./bashrc:

export LANG=en_US.UTF-8

Then run:

dpkg-reconfigure locales

And select US.UTF-8

edit

Iceweasel is deprecated , you should use firefox : apt-get install firefox-esr

Then you can change the language from about:preferences#content

Answer 2

echo 'en_US.UTF-8 UTF-8' >> /etc/locale.gen
locale-gen
echo 'LANG=en_US.UTF-8
LC_ALL=en_US.UTF-8' > /etc/deault/locale