Auto-negotiation is the feature that allows a port on a switch, router, server, or other device to communicate with the device on the other end of the link to determine the optimal duplex mode and speed for the connection.
Good article which helps you to know more about Auto Negotiation.
An article on how to execute a command via Python.
How to make openssl non interactive while signing a certificate.
Use -batch option
openssl ca -batch -config "$CONF" -out "$BOXCERT" -infiles "$CSRFILE"
use the kernel core_pattern parameter. This may be useful if you want to save the core in an NFS location.
[root@test:~]$sysctl -w kernel.core_pattern=’/remote/dumps/%t_%e_core.%p’