1NEWGRP(1) User Commands NEWGRP(1)
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6 newgrp - log in to a new group
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9 newgrp [-] [group]
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12 newgrp is used to change the current group ID during a login session.
13 If the optional - flag is given, the user's environment will be
14 reinitialized as though the user had logged in, otherwise the current
15 environment, including current working directory, remains unchanged.
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17 newgrp changes the current real group ID to the named group, or to the
18 default group listed in /etc/passwd if no group name is given. newgrp
19 also tries to add the group to the user groupset. If not root, the user
20 will be prompted for a password if she does not have a password (in
21 /etc/shadow if this user has an entry in the shadowed password file, or
22 in /etc/passwd otherwise) and the group does, or if the user is not
23 listed as a member and the group has a password. The user will be
24 denied access if the group password is empty and the user is not listed
25 as a member.
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27 If there is an entry for this group in /etc/gshadow, then the list of
28 members and the password of this group will be taken from this file,
29 otherwise, the entry in /etc/group is considered.
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32 /etc/passwd
33 User account information.
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35 /etc/shadow
36 Secure user account information.
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38 /etc/group
39 Group account information.
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41 /etc/gshadow
42 Secure group account information.
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45 id(1), login(1), su(1), gpasswd(1), group(5), gshadow(5).
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49User Commands 07/30/2006 NEWGRP(1)