How can I fix a locale warning from perl?

From: ?http://stackoverflow.com/questions/2499794/how-can-i-fix-a-locale-warning-from-perl

When I run?perl,I get the warning:

perl: warning: Setting locale failed.
perl: warning: Please check that your locale settings:
    LANGUAGE = (unset),LC_ALL = (unset),LANG = "en_US.UTF-8"
are supported and installed on your system.
perl: warning: Falling back to the standard locale ("C").

Your OS doesn't know about?en_US.UTF-8.

You didn't mention a specific platform,but I can reproduce your problem:

% uname -a
OSF1 hunter2 V5.1 2650 alpha
% perl -e exit
perl: warning: Setting locale failed.
perl: warning: Please check that your locale settings:
    LC_ALL = (unset),LANG = "en_US.UTF-8"
    are supported and installed on your system.
perl: warning: Falling back to the standard locale ("C").

My guess is you used ssh to connect to this older host from a newer desktop machine. It's common for?/etc/ssh/sshd_config?to contain

AcceptEnv LANG LC_*

which allows clients to propagate into new sessions the values of those environment variables.

The warning gives you a hint about how to squelch it if you don't require the full-up locale:

% env LANG=C perl -e exit
%

or with bash:

$ LANG=C perl -e exit
$ 

For a permanent fix,choose one of

1. On the older host,set the?LANG?environment variable in your shell's initialization file.
2. Modify your environment on the client side,?e.g.,rather than?ssh hunter2,use the command?LANG=C ssh hunter2.