template_BASH_zipl_bls_entries_option

# platform = Red Hat Enterprise Linux 8

# Correct BLS option using grubby, which is a thin wrapper around BLS operations
grubby --update-kernel=ALL --args="{{{ ARG_NAME }}}={{{ ARG_VALUE }}}"

# Ensure new kernels and boot entries retain the boot option
if [ ! -f /etc/kernel/cmdline ]; then
    echo "{{{ ARG_NAME }}}={{{ ARG_VALUE }}}" > /etc/kernel/cmdline
elif ! grep -q '^(.*\s)?{{{ ARG_NAME }}}={{{ ARG_VALUE }}}(\s.*)?$' /etc/kernel/cmdline; then
    sed -Ei 's/^(.*)$/\1 {{{ ARG_NAME }}}={{{ ARG_VALUE }}}/' /etc/kernel/cmdline
fi