Running out of drive space Cent OS 6.9

Hi,

I'm running out of disk space and starting to get worried, I haven't been able to find the right answer yet.

I have a vps with OVH which originally started with 20gb but since upgrading it now has 40gb.

I tried to follow this guide Running out of drive space - Centos 6.5 and got to psa where it returned unknown command error.


root@rescue-pro:~# df -h
Filesystem Size Used Avail Use%...

Running out of drive space Cent OS 6.9