If you need to check the available hard disk space and memory assigned to your cloud server, you can do so by running the commands.
For both Ubuntu and Centos Platform
To check for available hard disk space, type the following command on your server’s SSH terminal.
To check for available memory, type the following command on your server’s SSH terminal.
total used free shared buffers cached Mem: 750 625 125 0 35 335 -/+ buffers/cache: 254 496 Swap: 956 0 956
With reference to the result above, the cloud server has used 625MB of RAM and 496MB of RAM is available for both user and program.