print "Process \"$change_me\" ? (j/n) : ";

$svar = ja_nei(<>);
if ($svar) {
  fixer( 'anonymous_enable=YES','anonymous_enable=NO',"$change_me" );
  fixer( '#nopriv_user=ftpsecure','nopriv_user=ftpsecure',"$change_me" );
  doSystemCommand("useradd -m ftpsecure -s /bin/bash");
}

## 
# Subs
##

sub ja_nei {
  #chomp( my $input = (<STDIN>) );
  my $input = (<STDIN>);
  if ( $input =~ /^j|^y/i ) {
    return 1;
  }
  else {
    return 0;
  }
}

sub fixer {
  my $pat   = shift;
  my $to    = shift;
  my $file  = shift;
  my $count = 0;
  local $^I = '';
  undef @ARGV;
  push @ARGV, $file;
  while (<>) {
    if (s/$pat/$to/g) {
      $count++;
    }
    print;
  }
  if ( $count == 0 ) {
    say "WARNING : No changes made to file \"$file\"";
  }
  elsif ( ($g_debug) && ($count) ) {
    say "\"$pat\" changed to \"$to\" in \"$file\"";
  }
}

sub doSystemCommand {
  my ($systemCommand) = @_;
  my $returnCode = system($systemCommand );
  if ( $returnCode != 0 ) {
    die "Failed executing [$systemCommand] : $!\n";
  }
  return;
}