Fixed CPU usage and memory for i3blocks

configs/i3blocks-scripts/cpu_usage

@@ -29,7 +29,7 @@ GetOptions("help|h" => \&help,
 
 # Get CPU usage
 $ENV{LC_ALL}="en_US"; # if mpstat is not run under en_US locale, things may break, so make sure it is
-open (MPSTAT, 'mpstat 1 1 |') or die;
+open (MPSTAT, 'mpstat |') or die;
 while (<MPSTAT>) {
     if (/^.*\s+(\d+\.\d+)\s+$/) {
         $cpu_usage = 100 - $1; # 100% - %idle

configs/i3blocks-scripts/memory

@@ -40,7 +40,7 @@ END {
 	if (type == "swap")
 		printf("%.1fG\n", (swap_total-swap_free)/1024/1024)
 	else
-		printf("%.1fG\n", mem_free/1024/1024)
+		printf("%.1fG\n", (mem_total-mem_free)/1024/1024)
 
 	# TODO: short text