Free More Memory in Ubuntu

Following procedure will help you to free more memory in ubuntu machines :

Type the following command at your terminal command prompt :

1. Check the current memory
   

   free -m

2. Flush file system buffers for safety
   

   sync

3. Become root (simply sudo-ing the final command won’t work because of the redirection)
   

   sudo bash

4. Free cached memory
   

   echo 1 > /proc/sys/vm/drop_caches

5. Now finally check the memeory status after freeing
   

   free -m