09-09-2011
I would reccomend you check setuid.
You can make a shell script and a small c program to call it with root privileges.
So an example :
You make shell script with USER named test.sh which does cp file1 /etc/
Then you make a C program called execshell (or whatever) which runs that script with system call ( please find examples online for C setuid and system call )
Compile that program.
As root you make chown root:root and chmod 4755 to that C program.
User can now invoke that c program which will execute that shell script with root permisions and copy the file1 to /etc/ as root invoked by USER.
Be carefull tho, setuid needs to be handled with care.
passwd would be a lovely example of setuid in C and exceptions it uses.
Hope that helps.
Regards
Peasant.
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DEBPKG(1) General Commands Manual DEBPKG(1)
NAME
debpkg - wrapper for dpkg
SYNOPSIS
debpkg dpkg-options
DESCRIPTION
debpkg simply invokes dpkg(1) but first becomes superuser so that dpkg is able to install and remove packages. It also cleans the environ-
ment and resets PATH to a sane default: "/usr/sbin:/usr/bin:/sbin:/bin:/usr/bin/X11" so that local versions of programs are not run by
accident.
REQUIREMENTS
debpkg must be given superuser privileges in some way to function properly. Access to debpkg with those privileges is the same as having
superuser access to your machine. debpkg will abort if it finds that it neither being run by root nor setuid root.
The devscripts package has been designed to allow debpkg to be made setuid root. This works by using a compiled wrapper script, which
means that suidperl is not required. See dpkg-statoverride(8) if you wish to make this program setuid root. sudo or super could also con-
ceivably be used.
AUTHOR
Christoph Lameter <clameter@debian.org>; minor modifications made by Julian Gilbey <jdg@debian.org>.
DEBIAN Debian Utilities DEBPKG(1)