How do I disable the blinking cursor in gnome-terminal?

You can disable the blinking also from the command line (gconf-editor is not installed by default):

 gconftool-2 --set /apps/gnome-terminal/profiles/Default/cursor_blink_mode --type string off

---

For newer versions of gnome-terminal, the command has changed:

gsettings set org.gnome.Terminal.Legacy.Profile:/org/gnome/terminal/legacy/profiles:/:$(gsettings get org.gnome.Terminal.ProfilesList default|tr -d \')/ cursor-blink-mode off

Yes, there is a setting hidden in gconf.
Open gconf-editor, navigate to /apps/gnome-terminal/profiles/Default, find cursor_blink_mode and change its value to off.

I review this post on almost every single Gnome install. Seems that the actual variable name changes every so often.

My solution: gsettings list-recursively | grep blink

Then I set the link value from True to False. As of now, it is org.gnome.desktop.interface cursor-blink, so:

gsettings set org.gnome.desktop.interface cursor-blink false

Hope this helps someone else in the future!