Disable Command-W in the terminal Is there any way to disable Command+W in the terminal? 

On several occasions I have accidentally closed a terminal window containing important information when I meant to close a Safari tab and did not realize that the terminal was the active window.
To disable ⌘W in Terminal, do the following:


From the  menu in the top left corner of the screen, select System Preferences. Click on Keyboard then Keyboard Shortcuts then Application Shortcuts.

Click the + button to add a new shortcut
Select "Terminal.app" for the application, and for the command, type Close Window (this is case sensitive). In the shortcut box, give it a different shortcut, like ⌘ControlW 
Now ⌘W will not close your terminal windows.