EVERYTHING FROM THE OTHER REPO
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Read this file first for a brief overview of the current version
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of passwd.
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---Shadow passwords
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The command `shadowconfig on' will turn on shadow password support.
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This is the default. Turning off shadow passwords is not supported
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anymore.
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Together with shadow passwords, you get the ability to set password ages
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and expirations with chage(1).
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NOTE: If you use the nscd package, you may have problems with a
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slight delay in updating the password information. You may notice
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this during upgrades of certain packages that try to add a system
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user and then access the users information immediately afterwards.
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To avoid this, it is suggested that you stop the nscd daemon before
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upgrades, then restart it again.
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---General configuration
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Most of the configuration for the shadow utilities is in
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/etc/login.defs. See login.defs(5). The defaults are quite
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reasonable.
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Also see the /etc/pam.d/* files for each program to configure the PAM
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support. PAM documentation is available in several formats in the
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libpam-doc package.
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---Encryption
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This is enabled now using the /etc/pam.d/* files. Examples are given.
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---Adding users and groups
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Though you may add users and groups with the SysV type commands,
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useradd and groupadd, I recommend you add them with Debian adduser
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version 3+. adduser gives you more configuration and conforms to the
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Debian UID and GID allocation.
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Editing user and group parameters can be done with usermod and
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groupmod. Removing users and groups can be done with userdel and
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groupdel.
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--- Group administration
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Local group allocation is much easier. With gpasswd(1) you can
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designate users to administer groups. They can then securely add or
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remove users from the group.
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--- What to read next?
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Read the manpages, the other files in this directory, and the Shadow
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Password HOWTO (included in the doc-linux package). A large portion
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of these files deals with getting shadow installed. You can, of
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course, ignore those parts.
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Also, the libpam-doc package will go a long way to allowing you to take
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full advantage of the PAM authentication scheme.
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