This is part of brew output
==> ./configure --prefix=/usr/local/Cellar/sane-backends/1.0.23 --localstatedir= ==> make ==> make install Warning: Could not link sane-backends. Unlinking... Error: The `brew link` step did not complete successfully The formula built, but is not symlinked into /usr/local You can try again using `brew link sane-backends' Possible conflicting files are: Warning: Could not link sane-backends. Unlinking... Error: File exists - /usr/local/share/man/man8
Can anybody tell me what is going on and how to proceed?