Você pode esclarecer o que está perguntando? Mas, para que o cron execute no restart, você pode usar o @reboot.
man 5 crontab
These special time specification "nicknames" are supported, which replace the 5 initial time and date
fields, and are prefixed by the ’@’ character:
@reboot : Run once after reboot.
@yearly : Run once a year, ie. "0 0 1 1 *".
@annually : Run once a year, ie. "0 0 1 1 *".
@monthly : Run once a month, ie. "0 0 1 * *".
@weekly : Run once a week, ie. "0 0 * * 0".
@daily : Run once a day, ie. "0 0 * * *".
@hourly : Run once an hour, ie. "0 * * * *".