Press Alt+F1/F2/F3 to switch between the 3 terminals.
Refresh the page to reset the emulator.
If the OS doesn't load correctly at first, it should fix on a refresh.
Commands to enter in the terminal:
ls
fish (plays an animation of fish)
grep <text to search for>
cat <filename>
shell (runs a new shell program, can have 6 open at a time including the 3 base shells for each terminal)
exit (exits the current shell program)
counter (lets you choose an option to count to)
pingpong (plays a neverending pingpong animation)
hello
Thanks to Peizhe Liu for his help in emulating the OS on a website!