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Package Management Tools
Running dpkg
dpkg can be run at two levels. Many of the information features of dpkg
are available to an unprivileged user account. For tasks like removing and
installing packages, root privilege is required. This root privilege may be
obtained from tools like sudo or su if root login is undesirable. Scripts that
use dpkg to install or remove packages must either be run with root privilege
or have the facility to gain root access for the critical operations.
sudo is provided as an alternative to logging in as root to obtain those priv 
ileges. Entries in the controlling file (/etc/sudoers) determine the commands
that a given user can execute with root privilege. In this way, individuals
or groups may be given access to areas of the system which are normally off
limits.
What's with all this need for root access? Isn't it dangerous to use root for
such a simple thing as package installation? Well, look at it from another
point of view. Would you wish any user on your system to be able to install a
potentially important package on your system? Those, hopefully, few people
that are trusted to do the maintenance jobs that require root access are also
those folks who should be trusted to install and remove packages.






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