08-23-2002
you can change the permissions of the directories /root and whatever directories you want to by the command chmod. but if you do not allow the user to access /lib and /usr directories, then it could be problematic as they contain the most common libraries and commands to be used by most common program. say if he is doing C programming, then removing the permissions of /lib directory will stop him from doing any kind of programmig.
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LEARN ABOUT XFREE86
dh_fixperms
DH_FIXPERMS(1) Debhelper DH_FIXPERMS(1)
NAME
dh_fixperms - fix permissions of files in package build directories
SYNOPSIS
dh_fixperms [debhelperoptions] [-Xitem]
DESCRIPTION
dh_fixperms is a debhelper program that is responsible for setting the permissions of files and directories in package build directories to
a sane state -- a state that complies with Debian policy.
dh_fixperms makes all files in usr/share/doc in the package build directory (excluding files in the examples/ directory) be mode 644. It
also changes the permissions of all man pages to mode 644. It removes group and other write permission from all files. It removes execute
permissions from any libraries, headers, Perl modules, or desktop files that have it set. It makes all files in the standard bin and sbin
directories, usr/games/ and etc/init.d executable (since v4). Finally, it removes the setuid and setgid bits from all files in the package.
When the Rules-Requires-Root field has the (effective) value of binary-targets, dh_fixperms will also reset the ownership of all paths to
"root:root".
OPTIONS
-Xitem, --exclude item
Exclude files that contain item anywhere in their filename from having their permissions changed. You may use this option multiple
times to build up a list of things to exclude.
SEE ALSO
debhelper(7)
This program is a part of debhelper.
AUTHOR
Joey Hess <joeyh@debian.org>
11.1.6ubuntu2 2018-05-10 DH_FIXPERMS(1)