EDIT: grubby

#!/bin/bash if [[ -x /usr/libexec/grubby/grubby-bls ]] ; then exec /usr/libexec/grubby/grubby-bls "${@}" elif [[ -x /usr/libexec/grubby/grubby ]] ; then exec /usr/libexec/grubby/grubby "${@}" fi echo "Grubby is not installed correctly." >>/dev/stderr exit 1

SAVE CHANGES BACK TO DIR