5.0 Users, Groups and Passwords

Topics

• User, group and password files

• Adding users

• Modifying users

• Setting passwords

• Adding groups

• Adding groups to users

• Password mangement

Reading List

Chapter

• 7

Commands

Command	Action
id	Shows user information
ps -au	process information per user
passwd	change user password
useradd	Add users
usermod	Modify users
userdel	Delete users
groupadd	Add a group
groupmod	Modify a group
groupdel	Delete a group
date	show the date
chage	Change ageing of passwords

Chage Overview

Config Files

File	Config
/etc/passwd	Holds all users and their information
/etc/group	Holds all group information
/etc/shadow	Holds user passwords in hashes