On Windows and MacOS, after download, you can click to start the installation.
On Ubuntu, right-click to the.AppImage file and set permission to be executed, if this is your first time, you should get more details at https://appimage.org/
Tinker 2 needs some basic setup for the first time
php binary (required).vertical or horizontal which can quickly toggle on the status bar.normal or vim (very basic).
Tinker 2 only connects to your server using SSH via ssh client and scp. You should check if they're already installed on your computer or not to make Tinker 2 run correctly.
Ensure you installed them (example result on MacOs and Ubuntu)
which ssh
/usr/bin/ssh
which scp
/usr/bin/scp
If you still using a password to connect your server, you should add your public key to the server, check this article
Type your code in the Input editor (which should be on the left or above of two editors), then click Play icon on the sidebar, or using hotkey Ctr+Enter or Cmd+Enter
to execute.