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Full Discussion: ban the users...
Top Forums UNIX for Advanced & Expert Users ban the users... Post 302233492 by gajju on Sunday 7th of September 2008 10:56:20 PM
Old 09-07-2008
ban the users...

how can superuser stop all other users login on system without changing in /etc/passwd file and without using userdel command?
 

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userdel(1M)						  System Administration Commands					       userdel(1M)

NAME
userdel - delete a user's login from the system SYNOPSIS
userdel [-r] login DESCRIPTION
The userdel utility deletes a user account from the system and makes the appropriate account-related changes to the system file and file system. OPTIONS
The following options are supported: -r Remove the user's home directory from the system. This directory must exist. The files and directories under the home directory will no longer be accessible following successful execution of the command. OPERANDS
The following operands are supported: login An existing login name to be deleted. EXIT STATUS
The following exit values are returned: 0 Successful completion. 2 Invalid command syntax. A usage message for the userdel command is displayed. 6 The account to be removed does not exist. 8 The account to be removed is in use. 10 Cannot update the /etc/group or /etc/user_attr file but the login is removed from the /etc/passwd file. 12 Cannot remove or otherwise modify the home directory. FILES
/etc/passwd system password file /etc/shadow system file contain users' encrypted passwords and related information /etc/group system file containing group definitions /etc/user_attr system file containing additional user attributes ATTRIBUTES
See attributes(5) for descriptions of the following attributes: +-----------------------------+-----------------------------+ | ATTRIBUTE TYPE | ATTRIBUTE VALUE | +-----------------------------+-----------------------------+ |Availability |SUNWcsu | +-----------------------------+-----------------------------+ SEE ALSO
auths(1), passwd(1), profiles(1), roles(1), users(1B), groupadd(1M), groupdel(1M), groupmod(1M), logins(1M), roleadd(1M), rolemod(1M), useradd(1M), userdel(1M), usermod(1M), passwd(4), prof_attr(4), user_attr(4), attributes(5) NOTES
The userdel utility only deletes an account definition that is in the local /etc/group, /etc/passwd, /etc/shadow, and /etc/user_attr file. file. If a network name service such as NIS or NIS+ is being used to supplement the local /etc/passwd file with additional entries, userdel cannot change information supplied by the network name service. SunOS 5.10 8 Sep 1999 userdel(1M)
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