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Full Discussion: Protectiong data
Top Forums UNIX for Dummies Questions & Answers Protectiong data Post 59206 by locustfurnace on Monday 13th of December 2004 12:52:38 PM
Old 12-13-2004
By using groups, placing certain people in certain groups and allowing those groups to access only those files. and by using chmod to change the USER, GROUP, and WORLD permisisons to those files.



read the manuals

man group
man chmod
man chown
man chgrp
man chmod
 

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GROUP(5)						     Linux Programmer's Manual							  GROUP(5)

NAME
group - user group file DESCRIPTION
The /etc/group file is a text file that defines the groups on the system. There is one entry per line, with the following format: group_name:password:GID:user_list The fields are as follows: group_name the name of the group. password the (encrypted) group password. If this field is empty, no password is needed. GID the numeric group ID. user_list a list of the usernames that are members of this group, separated by commas. FILES
/etc/group BUGS
As the 4.2BSD initgroups(3) man page says: no one seems to keep /etc/group up-to-date. SEE ALSO
chgrp(1), gpasswd(1), groups(1), login(1), newgrp(1), sg(1), getgrent(3), getgrnam(3), gshadow(5), passwd(5) COLOPHON
This page is part of release 4.15 of the Linux man-pages project. A description of the project, information about reporting bugs, and the latest version of this page, can be found at https://www.kernel.org/doc/man-pages/. Linux 2016-10-08 GROUP(5)
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