February 2004
Intermediate to advanced
383 pages
11h 49m
English
The following tools will help you perform such tasks as searching the online documentation, switching user IDs, and controlling how programs run.
apropos
Locates commands by keyword.
clear
Clears the screen.
dc
Serves as a reverse-polish arbitrary precision calculator.
man
Gets information on a command.
nice
Changes a job’s priority.
nohup
Keeps a job running even if you log out.
passwd
Changes your password.
script
Produces a transcript of your login session.
su
Allows you to become the superuser. Since the
root account is disabled by default, you should
use sudo instead.
sudo
Executes a command as another user. This tool is usually used to temporarily gain superuser privileges.
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