1. The simplest Linux commands can be used without options.

a. Enter ls. What does this command do? Enter pwd. What does this command do?

b. Type cd ~. What does this command do? How does your prompt change? Type ls again. How does this differ from part a?

c. Type each of these commands and briefly explain what each does. whoami, arch, uname, date, vmstat.

d. Type which arch, which ifconfig, which vmstat. What are the responses toeach? Typewhichuseradd. Whatwastheresponse? Why? Whatdoeswhich do?