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Control users loggin /etc/passwd file

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linux-howto

http://www.go2linux.org – This is something every sysadmin knows, or shoul know, but maybe Desktop Linux users does not know. Yes it is not too useful for Desktop users anyway but, in case you do not know and might need to enable or disable the loggin ability of some users here is how to. First let's see why we would like to do such a thing (blocking a user from loggin). If you have a Linux System that works as email server, you do not need to give loggin permissions to all the users of the box, specially if you allow them to change their passwords using poppassd, as the normal user usually use (HowTos)