xxx@xxxl:~$ df -h
    Filesystem      Size  Used Avail Use% Mounted on
    /dev/sda1       228G   42G  174G  20% /

what is difference between Normal G and this 173G ? Is that all free memory is called Heap ? if i am allocating malloc(10) and in that 10 bytes i am storing thousands of bytes , its storing ?


You're looking at your hard drive...

You have a 250GB hard drive connected, of which you've used 42GB; 174GB is free space.

As far as I know, you're not running a supercomputer, so less then 174GB RAM should work fine ;)

To see your RAM size use free -g.

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