(W) You tried to say C<open(CMD, "|cmd|")>, which is not supported. You can
try any of several modules in the Perl library to do this, such as
-"open2.pl". Alternately, direct the pipe's output to a file using "E<gt>",
+IPC::Open2. Alternately, direct the pipe's output to a file using "E<gt>",
and then read it in under a different file handle.
=item Can't open error file %s as stderr