Red Hat LINUX 7.2 Reference Manual page 34

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The shadow-utils package contains a number of utilities that support:
• Conversion from normal to shadow passwords and back (pwconv, pwunconv)
• Verification of the password, group, and associated shadow files (pwck, grpck)
• Industry-standard methods of adding, deleting and modifying user accounts (useradd, user-
mod, and userdel)
• Industry-standard methods of adding, deleting, and modifying user groups (groupadd, group-
mod, and groupdel)
• Industry-standard method of administering the /etc/group file using gpasswd
There are some additional points of interest concerning these utilities:
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•
•
•
The utilities will work properly whether shadowing is enabled or not.
The utilities have been slightly modified to support Red Hat's user pri-
vate group scheme. For a description of the modifications, see the user-
add man page. For more information on user private groups, turn to Sec-
tion 2.4, User Private Groups.
The adduser script has been replaced with a symbolic link to
/usr/sbin/useradd.
The tools in the shadow-utils package are not Kerberos, NIS, hes-
iod, or LDAP enabled. New users will be local only. For more informa-
tion on Kerberos and LDAP, see Chapter 8, Using Kerberos 5 on Red Hat
Linux and Chapter 15, Lightweight Directory Access Protocol (LDAP).
Chapter 2:Users and Groups
Note