Perl warning Setting locale failed in Debian
Warning Message
The warning message during the installation of Perl applications will appear as follows
perl: warning: Setting locale failed.
perl: warning: Please check that your locale settings:
LANGUAGE = (unset),
LC_ALL = (unset),
LC_CTYPE = "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_ALL to default locale: No such file or directory
Generating locales
Missing locales are generated with locale-gen:
$ locale-gen en_US.UTF-8
Alternatively a locale file can be created manually with localedef
$ sudo localedef -i en_US -f UTF-8 en_US.UTF-8
Setting Locale Settings
The locale settings can be set (to en_US.UTF-8 in the example) as follows
$ 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
The dpkg-reconfigure locales command will open a dialog under Debian for selecting the desired locale. This dialog will not appear under Ubuntu.
Locale warning in RedHat or CentOS
warning: setlocale: LC_CTYPE: cannot change locale (UTF-8): No such file or directory
Run these commands
$ sudo vim /etc/environment
add these lines:
LANG=en_US.utf-8 LC_ALL=en_US.utf-8