HOWTO: packagekit to check update per login

PackageKit only checks once per the update interval, by default once every day.
It does not check on every desktop login.

You can change this behaviour by changing
/apps/gnome-packagekit/force_

get_updates_login to TRUE in gconf-editor. The
description of this key is: “Get the update list when the session starts, even
if not scheduled to. This ensures the user has up to date and valid data in the
tray at startup.”

HOWTO: TAB TO AUTOCOMPLETE COMMAND OPTIONS

yum install bash-completion

Now you will get the ability to use TAB to autocomplete your command and COMMAND OPTIONS.

HOWTO: equivalent yum option to apt-get autoremove

To remove packages that has been installed as dependencies for the package you are removing if they are only needed for that particular package.

a yum plugin must be installed. Otherwise, yum doesn’t provide the capability.

yum install yum-remove-with-leaves

Now yum will automatically have the same function as apt-get autoremove.

================
more:
yum-changelog is a Yum plugin for viewing package changelogs before/after updating.

Install yum-changelog via:
# yum install yum-changelog

How to use yum-changelog:
# yum update ktechlab –changelog
Loading “changelog” plugin
Loading “installonlyn” plugin
Setting up Update Process
Setting up repositories
[..]
Resolving Dependencies
–> Populating transaction set with selected packages. Please wait.
—> Package ktechlab.i386 0:0.3-6.fc6 set to be updated
–> Running transaction check

Changes in packages about to be updated:

ktechlab – 0.3-6.fc6.i386
* Wed Nov 22 23:00:00 2006 Chitlesh Goorah – 0.3-6
- Rebuilt due to new gpsim-devel release

By default, this plugin will show the changelogs before the updates. However if you want to make it echo those changelogs after the updates, replace when=pre by when=post in the file /etc/yum/pluginconf.d/changelog.conf

HOWTO: yum equivalent function with apt-get

1. Find and review “lost” packages

You can find orphaned packages (ie packages not in the repositories anymore) with the tool package-cleanup from the yum-utils package: yum install yum-utils; package-cleanup --orphans.
Old packages with a failing “%postun” script will remain partly
installed. Remove them with rpm -e package-name-and-version. It’s often
helpful to run this command after the update, too.

But here what ‘package-cleanup –orphans’ found out is the ‘obsolete’ ones in ubuntu words. Namely installed not from repositories.

2. Find yum install or update history

/var/log/yum.log

3. Find orphan packages
sudo package-cleanup –orphans

Note: Here ‘package-cleanup’ must run with sudo or su, otherwise lots of packages will be considered as orphans because of normal users don’t know the relationship between packages and repositories.