drets@MBP> sudo crontab -l                                                                                                                          ~
no crontab for root
drets@MBP> sudo cat /etc/crontab                                                                                                                ~
SHELL=/nix/store/a6gkm5vdylpjnsp9wzcb0c7kz11a3pak-bash-4.3-p46/bin/bash
PATH=/nix/store/1yrp69aqpjfkcfk8x9mp7ws6h3fps3sz-system-path/bin:/nix/store/1yrp69aqpjfkcfk8x9mp7ws6h3fps3sz-system-path/sbin

NIX_CONF_DIR=/etc/nix
25 02 * * * root poweroff