set locale LC_ALL

Privet vsem.
Rebiata, perl vidaet takuiu o6ibku:
perl: warning: Setting locale failed.
perl: warning: Please check that your locale settings:
LANGUAGE = (unset),
LC_ALL = "En_US",
LANG = "[ll]_[CC]"
are supported and installed on your system.
perl: warning: Falling back to the standard locale ("C").
Sistema: LinuxFromScratch.
Kak mne nastroit' locale?