On 20Jul2010 13:39, Rudolf Kastl <che666@xxxxxxxxx> wrote:
| 2010/7/20 Suvayu Ali <fatkasuvayu+linux@xxxxxxxxx>:
| > On Tuesday 20 July 2010 01:19 AM, Adalbert Prokop wrote:
| >> A simple
| >>
| >> su -c "rpm -e preload"
| >>
| >> will also work.
| >
| > However that is not recommended, at least that is what I know. This
| > leaves yum in a state where it is unaware of the removed rpm.
|
| This is wrong. yum is just a frontend for rpm.
Indeed.
| > It is
| > always recommended to use yum over rpm directly. :)
|
| Yum makes things easier. rpm itsself can handle more complex
| situations (system troubleshooting etc)
In particular, if I want to remove _exactly_ one package, I will always
use rpm and not yum.
Yum descends the packagae dependency tree and offers to also remove the
package that require the package I asked to remove. Easy to do damage
that way.
Rpm also descends the dependency tree, but will refuse the remove of if
another package depends on the one I asked to remove. Safer!
So Adalbert's "rpm -e preload" advice is good advice.
It happens that nothing depends on preload (I know this because I
routinely remove it from systems because it modifies binaries and that
sets off annoying alerts in our integrity monitoring software).
So:
yum is recommended because is makes a lot of common tasks much easier
rpm is fine though, provided you are ok with its limitations;
as described above - sometimes I want those limitations
The package state is kept entirely in the rpm database - it is safe, as
far as the database integrity goes, to mix use of rpm and yum as suits
your needs.
Cheers,
--
Cameron Simpson <cs@xxxxxxxxxx> DoD#743
http://www.cskk.ezoshosting.com/cs/
Wagner's music is better than it sounds. - Mark Twain
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