bcron 0.11-19 (ppc64el binary) in ubuntu lunar

 Bruce cron system is designed with secure operations in mind. To do this,
 the system is divided into several separate programs, each responsible for
 a separate task, with strictly controlled communications between them.
 .
 The user interface is a drop-in replacement for similar systems, such as
 vixie-cron, but the internals differ greatly.