This question already has an answer here:
My root (/) partition is full and i want to extend my root file system by freeing extra memory present in other partition which is ext4.
How to free some space with ext4 allocation and how to extend that freed memory to root(/) part.?
Here is image showned by gparted. image
And here is the output of
Filesystem Size Used Avail Use% Mounted on /dev/sda1 19G 15G 2.9G 84% / none 4.0K 0 4.0K 0% /sys/fs/cgroup udev 2.0G 12K 2.0G 1% /dev tmpfs 396M 1.1M 395M 1% /run none 5.0M 0 5.0M 0% /run/lock none 2.0G 416K 2.0G 1% /run/shm none 100M 40K 100M 1% /run/user /dev/sda6 662G 132G 497G 21% /home
Please guide in doing this. Thanks in advance.