scripts/rvm-install in rvm-0.1.26 vs scripts/rvm-install in rvm-0.1.27

@@ -178,11 +178,11 @@
     mv "$ruby" "$rvm_rubies_path/"
     new_path="$rvm_rubies_path/$(basename $ruby)"
     for file in gem rake ; do
       spinner
       if [[ -s "$new_path/bin/$file" ]] ; then
-        sed -i.orig -e '1,1s=.*=#!'"$new_path/bin/ruby=" "$new_path/bin/$file"
-        rm -f "$new_path/bin/$file.orig"
+        sed -e '1,1s=.*=#!'"${new_path}/bin/ruby=" "${new_path}/bin/${file}" > "${new_path}/bin/${file}.new"
+        mv -f "$new_path/bin/$file.new" "$new_path/bin/$file"
         chmod +x "$new_path/bin/$file"
       fi
     done
   fi
 done