01-24-2012
Delete permissions aren't controlled by the file's own permissions at all, to delete a file you need write permissions on the directory it's in. Set the directory -w and you won't be able to delete it -- or create other files, for that matter.
Depending on the system and filesystem there may be other ways to control it. ext2/3/4 on linux have extended flags like immutable that can be set on files for instance.
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1 echo -e "Enter a filename"
2 read filename
3 if
4 then
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7 if
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9 else
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LEARN ABOUT DEBIAN
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 makes all files be owned by root, and 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.
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>
9.20120909 2012-05-19 DH_FIXPERMS(1)