kazulog@sv1:~$ cat /etc/os-release | head -2
PRETTY_NAME="Ubuntu 26.04 LTS"
NAME="Ubuntu"
kazulog@sv1:~$ grep -n 'ssl_enable\|rsa_cert_file\|rsa_private_key_file' /etc/vsftpd.conf
149:rsa_cert_file=/etc/ssl/certs/ssl-cert-snakeoil.pem
150:rsa_private_key_file=/etc/ssl/private/ssl-cert-snakeoil.key
151:ssl_enable=YES
kazulog@sv1:~$ sudo systemctl restart vsftpd