To Set the Console Text to Green with a Blinking Block Cursor

For Ubuntu: Update /etc/default/grub and add the quoted text to whatever is already there.

GRUB_CMDLINE_LINUX_DEFAULT="consoleblank=0 vt.cur_default=6 vt.color=2"

This will also set it so the console never blanks; adjust “consoleblank” to your own tastes (in seconds).

After updating, you need to run a command to commit the changes to the kernel at next boot:

/usr/sbin/update-grub 

For Raspberry Pi/Raspbian: Update /boot/cmdline.txt and add the following to whatever is already there:

vt.cur_default=6 vt.color=2 consoleblank=0 

This will also set it so the console never blanks; adjust “consoleblank” to your own tastes (in seconds).