Keep you system updated

**jortax** · 09-26-2009

What are your procedures for updating your Gentoo system without dependency problems.
I usually do:
emerge --sync
emerge --update world

For me it happens from time to time that I need to unmerge packages and reemerge them to go through with the world-emerge. Sometimes I remember to use revdep-rebuild, python-updater and emerge --depclean but its not a part of my "update-process". What is the best process to keep the system updated? Does the order of doing things matter?
Is this example a good process:

emege --sync
emerge --update world
emerge --depclean
python-updater
revdep-rebuild
emerge --update world

How do you do it?

**Jonathan183** · 09-26-2009

Welcome to the forums jortax

I can't claim to be an expert, my approach is usually ...

Code:

emerge --sync
emerge -avufDN world
emerge -avuDN world

I do this fairly regularly and then less regularly I will do

Code:

emerge -avuDN world

(usually as part of above)

Code:

emerge --depclean
revdep-rebuild

I prefetch files so I know everything should be available for the update and is consistent.

I used to dread running

Code:

emerge -uDN world

until I got a set of USE flags that worked for me.

Ed: I think it is worth running with -av options so you know what is going to be updated

.
It will be interesting to see what more experienced users do

**MikeTbob** · 09-26-2009

I usually only do

Code:

emerge --sync
emerge -pvuDN world && emerge -pvuDN system
emerge -vuDN world && emerge -vuDN system
revdep-rebuild

Every once in a while I'll run

Code:

emerge -depclean
revdep-rebuild

**gruven** · 09-26-2009

I have emerge -uDN world set in a crontab to run daily, and every 2 - 3 days I will run an

Code:

emerge -avuDN world && emerge -av --depclean && revdep-rebuild

I am on a quad so it really doesn't take long to update.

**Jonathan183** · 09-27-2009

Originally Posted by MikeTbob

Code:

emerge -vuDN world && emerge -vuDN system

Hi MikeTbob ... why do you do both world & system updates?

**MikeTbob** · 09-27-2009

Originally Posted by Jonathan183

Hi MikeTbob ... why do you do both world & system updates?

I read this somewhere,,world is different from system and for some reason I still do it every now and then. Here is a link, that kind of explains it....but it's not the link I read awhile back, I can't seem to find that one.

[gentoo-user] Emerge -u system or World ?

**Jonathan183** · 09-28-2009

How can

Code:

emerge -uDN world

fail to update packages which

Code:

emerge -uDN system

will ... unless you manually change world definition?
I can understand updating system without world update can leave packages not being updated but how does this work the other way round? ... is this related to stage1/stage2 tarballs?

... if there is a good reason for running both I'll start doing it

**MikeTbob** · 09-28-2009

I'm not sure of the answer here. Maybe someone else could pitch in, I may be doing it for nothing....I seem to remember it did update something a long time ago...but maybe I just ran emerge -u system first. Does emerge -avuDN system want to update any packages on your system?

**nysmisqui** · 09-28-2009

Originally Posted by MikeTbob

I'm not sure of the answer here. Maybe someone else could pitch in, I may be doing it for nothing....I seem to remember it did update something a long time ago...but maybe I just ran emerge -u system first. Does emerge -avuDN system want to update any packages on your system?

Glad to hear you're using this: I plan to keep it much more aggressively up-to-date than has been the case in the past, but don't hesitate to let me know if you find errors or need clarifications.

**ursusca** · 09-28-2009

I usually do

emerge --sync && emerge --update --ask world && emerge --update --deep world

If I have altered any of USE flags:
emerge --update --deep --newuse world
emerge --depclean
revdep-rebuild

After transition to new python:
python-updater

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