"w" is standard on most UNIX machines, At one time, "f" was a link to "finger" on many machines, but I think that's mostly died out now. And of course there's

"w" is standard on most UNIX machines, At one time, "f" was a link to "finger" on many machines, but I think that's mostly died out now. And of course there's "X", although you usually don't run that yourself at the command line unless you're debugging something.