Additional shell commands inserted in the bootloader installer script after generating menu entries. It can be used to expand on extra boot entries that cannot incorporate certain pieces of information (such as the resulting init= kernel parameter).

""

''
  default_cfg=$(cat /boot/loader/loader.conf | grep default | awk '{print $2}')
  init_value=$(cat /boot/loader/entries/$default_cfg | grep init= | awk '{print $2}')
  sed -i "s|@INIT@|$init_value|g" /boot/custom/config_with_placeholder.conf
''