How open file with gedit withot terminal block? [duplicate]

You will enter the & to instruct the shell to launch Gedit in the background:

gedit templates/index.html &

"After the fact", i.e., after you forgot to enter the &, you still can send it to the background.

  • In the terminal, press Ctrl+z to stop the process
  • The prompt is now released. Now type bg to send the stopped process to the background. Otherwise, Gedit will remain "stopped" appear as frozen.