GNU Mcron The GNU package mcron (Mellor's cron) is a 100% compatible replacement for Vixie cron. It is written in pure Guile, and allows configuration files to be written in scheme (as well as the POSIX crontab format) for infinite flexibility in specifying when jobs should be run. Mcron was designed and written by Dale Mellor. A copy of a white paper describes the motivation and initial design co