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HTML rendering created 2024-06-26 by Michael Kerrisk, author of The Linux Programming Interface. For details of in-depth Linux/UNIX system programming training courses that I teach, look here. Hosting by jambit GmbH. |
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NAME | SYNOPSIS | DESCRIPTION | CONFIGURATION | FILES | SEE ALSO | COLOPHON |
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NEWGRP(1) User Commands NEWGRP(1)
newgrp - log in to a new group
newgrp [-] [group]
The newgrp command is used to change the current group ID during
a login session. If the optional - flag is given, the user's
environment will be reinitialized as though the user had logged
in, otherwise the current environment, including current working
directory, remains unchanged.
newgrp changes the current real group ID to the named group, or
to the default group listed in /etc/passwd if no group name is
given. newgrp also tries to add the group to the user groupset.
If not root, the user will be prompted for a password if she does
not have a password (in /etc/shadow if this user has an entry in
the shadowed password file, or in /etc/passwd otherwise) and the
group does, or if the user is not listed as a member and the
group has a password. The user will be denied access if the group
password is empty and the user is not listed as a member.
If there is an entry for this group in /etc/gshadow, then the
list of members and the password of this group will be taken from
this file, otherwise, the entry in /etc/group is considered.
The following configuration variables in /etc/login.defs change
the behavior of this tool:
SYSLOG_SG_ENAB (boolean)
Enable "syslog" logging of sg activity.
/etc/passwd
User account information.
/etc/shadow
Secure user account information.
/etc/group
Group account information.
/etc/gshadow
Secure group account information.
id(1), login(1), su(1), sg(1), gpasswd(1), group(5), gshadow(5).
This page is part of the shadow-utils (utilities for managing
accounts and shadow password files) project. Information about
the project can be found at
⟨https://github.com/shadow-maint/shadow⟩. If you have a bug
report for this manual page, send it to
[email protected]. This page was obtained
from the project's upstream Git repository
⟨https://github.com/shadow-maint/shadow⟩ on 2024-06-15. (At that
time, the date of the most recent commit that was found in the
repository was 2024-06-13.) If you discover any rendering
problems in this HTML version of the page, or you believe there
is a better or more up-to-date source for the page, or you have
corrections or improvements to the information in this COLOPHON
(which is not part of the original manual page), send a mail to
[email protected]
shadow-utils 4.14.0 06/15/2024 NEWGRP(1)
Pages that refer to this page: flock(1), gpasswd(1), groups(1@@shadow-utils), pmdammv(1), sg(1), group(5), gshadow(5), credentials(7)
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HTML rendering created 2024-06-26 by Michael Kerrisk, author of The Linux Programming Interface. For details of in-depth Linux/UNIX system programming training courses that I teach, look here. Hosting by jambit GmbH. |
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