root@blackjack:/usr/bin# ps -efL | grep perl
    root 10694  8844     1     1   0 10:32:34 pts/1       0:00 grep perl
     usr 10679  9335     1     1   3 10:32:28 pts/2       0:06 perl -Mthreads -Mbignum -cle $_->join foreach map async { 2**859433-1 } , 1..2