Updating rpm

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The command out of the package yum-utils compares the mapped libraries of the running processes with their counterparts on disk and list processes with out of date copies in memory.

The list allows identifying services and processes which needs to be restarted after the update.

In the default model, the RPMs are composed on a server into an OSTree repository, and client systems can replicate in an image-like fashion, including incremental updates.

Unlike traditional operating system update mechanisms, it will automatically keep the previous version of the OS, always available for rollback. By default, you always have a previous tree (an operating system snapshot) installed.

YUM is to Cent Os and Fedora what apt-get is to Debian and Ubuntu. Reading the manual page states that YUM stands for "Yellowdog Updater Modified".

YUM is the successor to the YUP tool which was the default package manager in Yellowdog Linux. You have version 1.0 of a program and there are a number of bug fixes 1.1, 1.2, 1.3 etc. Now imagine you want to install the bug fixes but not move to the new version because quite frankly it sucks. For instance, imagine you had a program that monitors a folder and if it finds a file the program sends you an email letting you know there is a new file.

If you boot into the new tree and determine that something is wrong, you can invoke .

For an upgrade installation using RPM packages, the My SQL server is automatically restarted at the end of the installation if it was running when the upgrade installation began.This guide gives a good overall indication as to how YUM works.However, it only scratches the surface of all the possible usages of YUM.If something is shown but can not be removed even after restarting relevant services, the system needs to reboot OS.Some services cannot be restarted without destablizing the server.

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