genswap.sh: add option to view current swappiness level

Former-commit-id: ff1ae6603e86d69d72073934dd646e0aead602e2
Former-commit-id: 176536b5c4673c2c219494a6f43e44a9204053e7

genswap.sh

@@ -162,10 +162,17 @@ function setSwappinessLvl(){
     fi
 }
 
+liveSwappiness(){
+    CURRENTSWAPPINESS=$(cat /proc/sys/vm/swappiness)
+    echo -e "\n${LCYAN}Current swappiness value: (reboot to apply any changes you set):${NC}\n"
+    echo -e "${LGREEN}${CURRENTSWAPPINESS}${NC}\n"
+}
+
 function help(){
     echo -e "\nUsage: $0 [-a] [--auto] [-s] [--swappiness]\n\n"
-    echo -e "-a | --auto        Automatically create and size swapfile based on physical memory\n"
-    echo -e "-s | --swappiness  Set the swappiness value to minimize swap usage\n\n"
+    echo -e "-a | --auto                Automatically create and size swapfile based on physical memory\n"
+    echo -e "-ss | --set-swappiness     Set the swappiness value to minimize swap usage\n\n"
+    echo -e "-ls | --live-swappiness    View current swappiness level"
 }
 
 function version(){
@@ -198,10 +205,14 @@ case "${1}" in
         version
     ;;
 
-    -s|--swappiness)
+    -ss|--set-swappiness)
         setSwappinessLvl
     ;;
 
+    -ls|--live-swappiness)
+        liveSwappiness
+    ;;
+
     *)
         help
     ;;