Also heed the security warning in the FAQ item I linked above, and circumvent the security issue with a custom appender like (the untested):
package Log::Log4perl::Appender::HJOfilnamed;
use parent qw[ Log::Log4perl::Appender::File ];
use POSIX();
sub new {
my $class = shift;
my %opts = @_;
my $tim = POSIX::strftime('%Y-%m-%dT%H-%M-%SZ', gmtime);
my $fname = join '.', grep defined, $opts{name}, $opts{appender},
+$tim, 'log';
$fname =~ s{::}{.}g;
$fname =~ s{[^0-9a-zA-Z\-\+\.}{}g;
$fname = $1 if $fname =~ /^(.*)$/
return $class->new( @_, filename => $fname );
}
So
log4perl.appender.myFILE = Log::Log4perl::Appender::HJOfilnamed gets you a
MyApp.myFILE.2012-10-29T02-40-04Z.log
You'd probably want to set other defaults to your liking :)( layout, mode, ... )