1. slYou will see a train moving from the right to left on the screen.Install : $ sudo apt-get install slRun : $ slIt has options like -aiFe:-a An accident seems to happen. You'll feel pity for people who cry for help.-l shows little one.-F It flies.-e Allow interrupt by Ctrl+C.We can also make fun of other people by setting an alias like below:$alias ls=slWhen the user types ls, he will see the train instead of the file list.2. fortuneOutput one statement, it can be a joke, or famous saying. Or if you install the Chinese version, you will get Tang poem as well.Install : $sudo apt-get install ...