cleanRAM.sh

#!/bin/bash
#author: salman sk

config_file="config.conf"
log_file="logs/memory_cleanup.log"

# Ensure log directory exists
log_dir=$(dirname "$log_file")
mkdir -p "$log_dir"

# Check if script is run as root
if [ "$EUID" -ne 0 ]; then
  echo "You have to run this script with superuser privileges." | tee -a "$log_file"
  exit 1
fi

if [ ! -f "$config_file" ]; then
  echo "Config file not found. Exiting." | tee -a "$log_file"
  exit 1
fi

source "$config_file"

# Get memory information
MEM_FREE=$(grep MemFree /proc/meminfo | tr -cd '[:digit:]')
MEM_FREE_MIB=$(expr $MEM_FREE / 1024)

# Output information
echo -e "This script will clean your RAM.\nNow you have $MEM_FREE_MIB MiB available memory." | tee -a "$log_file"

# Clean RAM
sync; echo 3 > /proc/sys/vm/drop_caches

# Get memory info after cleaning
AFTER_MEM_FREE=$(grep MemFree /proc/meminfo | tr -cd '[:digit:]')
AFTER_MEM_FREE_MIB=$(expr $AFTER_MEM_FREE / 1024)

# Output information
CLEANED_MIB=$(expr $AFTER_MEM_FREE_MIB - $MEM_FREE_MIB)
echo "This cleaned $CLEANED_MIB MiB. Now you have $AFTER_MEM_FREE_MIB MiB." | tee -a "$log_file"