use strict;
use warnings;

$SIG{CHLD} = 'IGNORE';

# my $a;
# no longer necessary -- was a loop var where the loop 
# number range idiom will suffice
for ( 1..10 ) {
    unless ( fork() ) {
        # Here I want execute and continue without
        # wait the status
        exec( 'echo', 'foo!' );
        exit( 0 );
    }
}