The default filesystem on Mac OS X (HFS+) folds case unlike traditional unix filesystems; this can cause problems when LWP installs /usr/bin/HEAD, which clobbers the existing /usr/bin/head utility.
This advice was correct at one time, but it's badly outdated now. The current version of LWP defaults to *not* installing /usr/bin/HEAD on a case-insensitive volume. It asks if you want to install HEAD, and only clobbers /usr/bin/head if you force it to by overriding the default answer of 'no'.
Solutions to this include not installing the HEAD and similar shortcuts,
Which is the default.
sherm--
