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Full Discussion: Can root user run chmod 000 permission shell script?
Top Forums Shell Programming and Scripting Can root user run chmod 000 permission shell script? Post 302523934 by Perderabo on Friday 20th of May 2011 10:04:03 AM
Old 05-20-2011
Please read my article on file permissions: https://www.unix.com/tips-tutorials/1...rmissions.html

Quote:
Originally Posted by Perderabo
Also root is special. root is granted rwx to all directories and rw to all files. On a file, if any of the 3 x bits are set, root has execute permission. This special permission is often disabled on network mounted filesystems.
 

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LEARN ABOUT V7

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)
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