How to change language (locale)

[mdshovon97]

$ sudo locale-gen en_US.UTF-8
Generating locales (this might take a while)...
zh_CN.UTF-8... done
en_US.UTF-8... done
Generation complete.
$ sudo locale
locale: Cannot set LC_CTYPE to default locale: No such file or directory
locale: Cannot set LC_MESSAGES to default locale: No such file or directory
locale: Cannot set LC_ALL to default locale: No such file or directory
LANG=ja_JP.UTF-8
LANGUAGE=
LC_CTYPE="ja_JP.UTF-8"
LC_NUMERIC="ja_JP.UTF-8"
LC_TIME="ja_JP.UTF-8"
LC_COLLATE="ja_JP.UTF-8"
LC_MONETARY="ja_JP.UTF-8"
LC_MESSAGES="ja_JP.UTF-8"
LC_PAPER="ja_JP.UTF-8"
LC_NAME="ja_JP.UTF-8"
LC_ADDRESS="ja_JP.UTF-8"
LC_TELEPHONE="ja_JP.UTF-8"
LC_MEASUREMENT="ja_JP.UTF-8"
LC_IDENTIFICATION="ja_JP.UTF-8"
LC_ALL=
$

[ykhandler]

#SETUP LANGUAGE TO EN
echo export LANGUAGE=en_US > ~/.i18n
echo export LANG=en_US.UTF-8 >> ~/.i18n
echo export LC_ALL=en_US.UTF-8 >> ~/.i18n

export LC_ALL="en_US.UTF-8"
export LANG="en_US.UTF-8"
export LANGUAGE="en_US"

sudo localedef -f UTF-8 -i en_US en_US.UTF-8
cp /etc/locale.gen /etc/locale.gen1
sed -i 's/# en_US.UTF-8 UTF-8/en_US.UTF-8 UTF-8/g' /etc/locale.gen
sed -i 's/zh_CN.UTF-8 UTF-8/# zh_CN.UTF-8 UTF-8/g' /etc/locale.gen
sudo locale-gen

sudo update-locale LANG="en_US.UTF-8" LANGUAGE="en_US" LC_ALL="en_US.UTF-8"

[mdshovon97]

How to use this command

#SETUP LANGUAGE TO EN
echo export LANGUAGE=en_US > ~/.i18n
echo export LANG=en_US.UTF-8 >> ~/.i18n
echo export LC_ALL=en_US.UTF-8 >> ~/.i18n

export LC_ALL="en_US.UTF-8"
export LANG="en_US.UTF-8"
export LANGUAGE="en_US"

sudo localedef -f UTF-8 -i en_US en_US.UTF-8
cp /etc/locale.gen /etc/locale.gen1
sed -i 's/# en_US.UTF-8 UTF-8/en_US.UTF-8 UTF-8/g' /etc/locale.gen
sed -i 's/zh_CN.UTF-8 UTF-8/# zh_CN.UTF-8 UTF-8/g' /etc/locale.gen
sudo locale-gen

sudo update-locale LANG="en_US.UTF-8" LANGUAGE="en_US" LC_ALL="en_US.UTF-8"

[mdshovon97]

perl: warning: Setting locale failed.
perl: warning: Please check that your locale settings:
LANGUAGE = (unset),
LC_ALL = (unset),
LANG = "zh_CN.UTF-8"
are supported and installed on your system.
perl: warning: Falling back to the standard locale ("C").
locale: Cannot set LC_CTYPE to default locale: No such file or directory
locale: Cannot set LC_MESSAGES to default locale: No such file or directory
locale: Cannot set LC_ALL to default locale: No such file or directory
Extracting templates from packages: 100%
Preconfiguring packages ...

[ykhandler]

You can save it to a script file. Ex: MySetup.sh, then run it like this:
bash ./MySetup.sh