Xosd

http://www.ignavus.net/software.html

x on screen display -- is used for on screen display.

It's fairly insane. It's way too unix-like to be usable by mere mortals.

You'd think that you could run 'xosd' to run the program, but you're wrong. It's osd_cat ..

echo "foo" | osd_cat
echo "test" | osd_cat --font "-misc-fixed-medium-r-semicondensed--*-*-*-*-c-*-*-*)" -d 1
tail -f /var/log/messages | osd_cat

[edit] related

[?]

[?]