xcowsay

Display a cute cow and message on your Linux desktop. The cow is displayed for either a fixed amount of time, or an amount of time calculated from the size of the text. Click on the cow to dismiss it immediately. More information: https://www.doof.me.uk/xcowsay/.

xcowsay "hello, world"

ls | xcowsay

xcowsay --at=X,Y

xcowsay --cow-size=small|med|large

xcowsay --think

xcowsay --image=path/to/file