.../ManySubstitutions>perl mceparallel.pl nightfall.txt
file: nightfall.txt  mins: 0  secs: 5.763
file: nightfall.txt  mins: 0  secs: 4.290
file: nightfall.txt  mins: 0  secs: 4.179
file: nightfall.txt  mins: 0  secs: 4.293