Cleaned up the Memory scripts by removing undeeded greps and using awk

This will speed up execution because bash only needs to call the awk
binary and not grep along with it.

scripts/ram_info.sh

@@ -17,13 +17,13 @@ get_percent()
 	case $(uname -s) in
 		Linux)
 			# percent=$(free -m | awk 'NR==2{printf "%.1f%%\n", $3*100/$2}')
-			used_mem=$(free -g | grep Mem: | awk '{mem += $3} END {print mem}')
-			total_mem=$(free -h | grep Mem: | awk '{mem += $2} END {print mem}')
+			used_mem=$(free -g | awk '/^Mem/ {print $3}')
+			total_mem=$(free -h | awk '/^Mem/ {print $2}')
 			if (( $used_mem == 0 )); then
-				memory_usage=$(free -m | grep Mem: | awk '{mem += $3} END {print mem}')
+				memory_usage=$(free -m | awk '/^Mem/ {print $3}')
 				echo $memory_usage\M\B/$total_mem\G\B
 			else
-				memory_usage=$(free -g | grep Mem: | awk '{mem += $3} END {print mem}')
+				memory_usage=$(free -g | awk '/^Mem/ {print $3}')
 				echo $memory_usage\G\B/$total_mem\G\B
 			fi
 		;;