O abaixo deve fazê-lo. globstar deve exigir bash 4.0 +
shopt -s globstar
# Set the initial filename. Can be had from $@ if you wanted to.
the_file="filename.mpg"
# Roll through pretty much the entire server
for file in /**; do
if [[ -l "${file}" ]]; then
tmp="$(readlink "${file}")"
[[ "${tmp##*/}" == "${the_file##*/}" ]] && ls -l "${file}"
fi
done