atd
(8)run jobs queued for later execution
atd [-l load_avg] [-b batch_interval] [-d] [-f] [-s]
Options
5-lSpecifies a limiting load factor, over which batch jobs should not be run, instead of the compile-time choice of 1.5. For an SMP system with n CPUs, you will probably want to set this higher than n-1.
-bSpecify the minimum interval in seconds between the start of two batch jobs (60 default).
-dDebug; print error messages to standard error instead of using syslog(3). This option also implies -f.
-fRun atd in the foreground.
-sProcess the at/batch queue only once. This is primarily of use for compatibility with old versions of at; atd -s is equivalent to the old atrun command.