-d DEBUG print the <number of the stage>, nl, board state, nl, nl -n # # iterations (if omitted assume 20) -s Silent mode. Do not print ANYTHING at all. Cannot use -d and -s simultaneously! glife -n 10 file.in does 10 iterations and prints states 0 (initial) and 10 (final) glife -d file.in does 20 iterations and print 21 states (0..20) glife -s file.in does not print anything at all (useful for performance evaluation) glife file.in does 20 iterations and prints states 0 (initial) and 10 (final) glife -n 10 -s file.in does 10 iterations and does not print anything