Manage keys and certificates in both NSS databases and other NSS tokens. More information: https://manned.org/certutil.
certutil -N -d .
certutil -L -d .
certutil -K -d . -f path/to/password_file.txt
certutil -A -n "server_certificate" -t ",," -i path/to/file.crt -d .
certutil -S -f path/to/password_file.txt -d . -t ",," -c "server_certificate" -n "server_name" -g 2048 -s "CN=common_name,O=organization"