How to solve the LC_ locales issue in Debian

Does your Debian‘s based distro such as Ubuntu, Linux Mint, Elementary OS, Linux Lite, deepin, antiX, Zorin OS, LXLE, Peppermint OS and SparkyLinux,  complain about LC_* locales. Like the following complaining message.

perl: warning: Setting locale failed. 
perl: warning: Please check that your locale settings: 
 LANGUAGE = "en_US:en", 
 LC_ALL = (unset), 
 LC_MESSAGES = "en_US.UTF-8", 
 LANG = "en_US.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
....

All you have to do to fix that, is adding the following to /root/.bashrc and /home/USERNAME/.bashrc:

Do not forget to replace USERNAME with your own username.

lc_fix() {
    export LANGUAGE=en_US.UTF-8
    export LANG=en_US.UTF-8
    export LC_ALL=en_US.UTF-8
    if [[ "$1" == 'gen' ]]; then
        locale-gen en_US.UTF-8
        dpkg-reconfigure locales
    fi
}
lc_fix

If your locale language is something else, just replace the ‘en_US.UTF-8‘ with the one you’d prefer.

Then restart the terminal, or just reload the bash configuration file, by:

$ . ~/.bashrc

Finally, do the following as root or by using sudo :

$ lc_fix gen

Keep in mind that:

Warning: Using LC_ALL is strongly discouraged as it overrides everything. Please use it only when testing and never set it in a startup file. source

And that’s it.. Enjoy your Debian 🙂