CentOS

I am trying to create a network bridge for solusvm installation but i can not access the /etc/sysconfig/network-scripts/ifcfg-eth0 files.
It says not found.

nmcli is not found also.
Please assist.

You would need to be root to edit/create any files under /etc/sysconfig/network-scripts - are you?

Also network interfaces are not usually called things like ethX any more. Run ip link show to see what yours are really called.