Line Clamp is one of those tools which I wish had existed when I first started to code similar to Border-radius and Box shadow. In a nutshell what Line clamp allows you to do is restrict the number of lines to display based on property value in css.
I’ve only just recently started WP-CLI(WordPress Command Line Interface). It’s something I wish I started using earlier. Basically what WP-CLI does is allows you to run typical WordPress actions such as updating user passwords, removing plugins and backing up a WordPress database from the command line in the root of your WordPress installation.