got linking working

bin/dotutils.rb

@@ -0,0 +1,32 @@
+def existing_symlink(source, destination)
+  return if File.readlink(destination).eql?(source)
+  # rubocop:disable Metrics/LineLength
+  if @prompt.yes?("#{destination} currently points to #{File.readlink(destination)}, do you want point it at #{source}?")
+    File.unlink(destination)
+    puts "Linking #{destination} to #{source}"
+    File.symlink(source, destination)
+    puts 'link replaced'
+  else
+    puts "#{destination} is unchanged"
+  end
+  # rubocop:enable Metrics/LineLength
+end
+
+def rename_file(source, destination)
+  puts "#{destination} exists, renaming to #{destination}.predots"
+  File.rename(destination, "#{destination}.predots")
+  puts "Linking #{destination} to #{source}"
+  File.symlink(source, destination)
+end
+
+def link_file(source, destination)
+  if File.exist?(destination) && File.symlink?(destination)
+    existing_symlink(source, destination)
+  elsif File.exist?(destination)
+    # this catches anything that is not a symlink
+    rename_file(source, destination)
+  else
+    puts "Linking #{destination} to #{source}"
+    File.symlink(source, destination)
+  end
+end