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full-upgrade (apt) and dist-upgrade (apt-get), in addition to performing the function of upgrade, also intelligently handles changing dependencies with new versions of packages; apt and apt-get have a "smart" conflict resolution system, and will attempt to upgrade the most important packages at the expense of less important ones if necessary.
sudo retains the user's invocation rights through a grace period (typically 5 minutes) per pseudo terminal, allowing the user to execute several successive commands as the requested user without having to provide a password again. [21] As a security and auditing feature, sudo may be configured to log each command run.
sudo centralizes all privilege authorization information in a single configuration file, /etc/sudoers, which contains a list of users and the privileged applications and actions that those users are permitted to use. The grammar of the sudoers file is intended to be flexible enough to cover many different scenarios, such as placing restrictions ...
aptitude was created in 1999. At the time two other terminal-based APT-like front ends were available: the dselect program, which had been used to manage packages on Debian before APT was created, and the console-apt program, a project that was considered to be the heir apparent to dselect.
update: Update the files in a working copy with the latest version from a repository; lock: Lock files in a repository from being changed by other users; add: Mark specified files to be added to repository at next commit; remove: Mark specified files to be removed at next commit (note: keeps cohesive revision history of before and at the remove.)
Synaptic, an example of a package manager. A package manager or package-management system is a collection of software tools that automates the process of installing, upgrading, configuring, and removing computer programs for a computer in a consistent manner.
APT-RPM is a version of the Advanced Packaging Tool modified to work with the RPM Package Manager.It was originally ported to RPM by Alfredo Kojima and then further developed and improved by Gustavo Niemeyer, both working for the Conectiva Linux distribution at the time.
For example, an upgrade of RAM may not be compatible with existing RAM in a computer. Other hardware components may not be compatible after either an upgrade or downgrade, due to the non-availability of compatible drivers for the hardware with a specific operating system. Conversely, there is the same risk of non-compatibility when software is ...