1. List system partitions:root@sysresccd fdisk -l
.... Device Boot Start End Blocks Id System
/dev/sda1 * 2048 961146879 480572416 83 Linux
/dev/sda2 961146880 976771071 7812096 82 Linux swap / Solaris
....
2. Mount system partition:root@sysresccd mount /dev/sda1 /mnt
3. Now you can change to the mounted environment:root@sysresccd chroot /mnt /bin/bash
Now you can run commands on the VPS.