Linux in a Nutshell, 6th Edition

Miscellaneous

Command	Action
bc	Arbitrary precision calculator.
cal	Display calendar.
clear	Clear the screen.
info	Get command information from the GNU hypertext reader.
man	Get information on a command.
nice	Reduce a job’s priority.
nohup	Launch a command that will continue to run after logging out.
openvt	Run a program on the next available virtual terminal.
passwd	Set your login password.
script	Produce a transcript of your login session.
su	Become a different user, often the superuser.
sudo	Execute an authorized command as root or another user.
tee	Simultaneously store output in file and send to screen.
time	Time the execution of a command.
wall	Send a message to all terminals.
whoami	Print the current user id.
xargs	Process many arguments in manageable portions.