$ ps -e | grep perl
68028 ttys001    0:00.32 perl -I../test_mce pm-cb-g -m  # main process
68029 ttys001    0:00.01 perl -I../test_mce pm-cb-g -m  # shared mgr
68030 ttys001    0:00.01 perl -I../test_mce pm-cb-g -m  # control
68031 ttys001    0:00.09 perl -I../test_mce pm-cb-g -m  # communicate