#!/bin/bash

mainVer="$(
  curl 'ftp://ftp.cadsoft.de/eagle/program/' 2> /dev/null | \
    grep '^d' | \
    sed 's|^\(\S\+\s\+\)\{8\}||' | \
    sort -V | \
    tail -n1
  )"

curl "ftp://ftp.cadsoft.de/eagle/program/${mainVer}/" 2> /dev/null | \
  sed 's|^\(\S\+\s\+\)\{8\}||' | \
  grep '^eagle-lin64-[0-9.]\+\.run$' | \
  sed 's|^eagle-lin64-\([0-9.]\+\)\.run$|\1|' | \
  sort -V | \
  tail -n1