Ubuntu 16.04  PHP  PHP 7.0  PHP 7.1 

How to upgrade from PHP 7.0 to PHP 7.1 on Ubuntu 16.04 LTS (Xenial)

SSL  TLS  HTTPS  Ubuntu  Lets Encrypt  Ubuntu 16.04 

Error encountered when generating an SSL certificate with Let's Encrypt on Ubuntu 16.04.

linux  linux utilities  Ubuntu  Ubuntu 16.04  apt-cache  package management  command line  CLI 

Use the apt-cache and apt utilities on the Ubuntu command line to search for and obtain information about packages.

Ubuntu  Ubuntu 16.04  SSH  SFTP  system administration  config files 

How to grant users SFTP access via the /etc/ssh/sshd_config file in Ubuntu 16.04