brsh: front end to ssh for beowulf clusters

Usage: brsh [command] execute command on Beowulf cluster
  brsh -s scan the cluster for live nodes
  brsh -lprint status and list jobs in brsh queue
  brsh -aprint a summary of all brsh queues
  brsh -hplace a hold on brsh process queues
  brsh +hremove hold on brsh process queues
  brsh -fflush and disable brsh process queues
  brsh +fenable brsh process queues
  brsh -q <queue>select brsh queue other than default
  brsh --abortabort brsh all processes, -f implied
  brsh --reclaimreclaim any dead process slots
  brsh -i [<conf>] initialize the database from file <conf> or /etc/brsh.conf by default