open ACCESS, ">> $log" || die "Cannot open $log: $!";

##</code><code>##

open ACCESS, ">> $log" or die "Cannot open $log: $!";
#or
open (ACCESS, ">> $log") || die "Cannot open $log: $!";

##</code><code>##

open ACCESS, ">> $log" || die "Cannot open $log: $!";

##</code><code>##

open ACCESS, ( ">> $log" || die "Cannot open $log: $!"; )