Red Hat NETSCAPE MANAGEMENT SYSTEM 6.0 - COMMAND-LINE Manual do Utilizador descarregar pdf (Página 20)

User Administration

Add a user useradd

Modify a user usermod

Delete a user userdel

Change password

passwd username (if logged on as root, can change anyone’s password – if

logged on as user, can only change own password, no need to type your

username as the switch)

Group administration

command

groupadd

groupmod

groupdel

gpasswd

Who is logged on

users

What group(s) do I belong

to?

groups

User login activity

last

lastb

who

List last logged in users

Last – shows the following information:

• Type of Login

• Process ID of login process

• Device name of tty

• Init ID or abbreviated ttyname

• User Name

• Hostname for remote login

• Exit Status of a process

• Time entry was made

• IP address of remote host

Manage user accounts • chage (1) - change user password expiry information

• groups (1) - print the groups a user is in

• newusers (8) - update and create new users in batch

• passwd (1) - update a user's authentication tokens(s)

• nologin (5) - prevent non-root users from log into the system

• su (1) - run a shell with substitute user and group IDs

• useradd (8) - Create a new user or update default new user

information

• userdel (8) - Delete a user account and related files

• usermod (8) - Modify a user account

• chgrp (1) - change the group ownership of files

• chown (1) - change the user and group ownership of files

• gpasswd (1) - administer the /etc/group file

• groupadd (8) - Create a new group

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