Sunday, October 10, 2010

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Restoring programs and settings after a reinstalling Ubuntu Security

10.10) we face the eternal dilemma "upgrade or do a clean install? Here are the advantages of each method.


Update: The main advantage is that the system is exactly as we had before the upgrade, with the same settings and the same programs installed, but with all the latest news and updates to the new Ubuntu.
Clean Install: let the system clean, ensuring that everything works perfectly and no errors crept above configuration.
In most cases, ideally a mix: a clean system but maintaining the user settings and programs previously installed manually. In this this article we will see how to get it, a system installed from scratch while maintaining programs and persoanlizaciones we had in the previous system.

Keep user settings

All user settings, without exception, are in the directory
/ home
, all you have to do is keep this folder unchanged.

    two different situations may occur which
  • directory / home is on the same partition as the rest of the system (so that its contents are erased with the new installation) or is on a separate partition.
/ home on a separate partition, this case gives us a lot of things, all we do is select manual partitioning during the installation process and ensure that the partition
/ home
refitted in
/ home
and is NOT checked the box format.

/ home
in the root partition: in this case we make a backup of the entire directory
/ home as this will be deleted during the installation. 1. Create a backup BEFORE the upgrade: cd / & & sudo tar cvfz backup_home.tar.bz2 / home
Save the file
backup_home.tar.bz2
in a place that we know will not delete, such as a USB drive
2. Install the new system, installed the new Ubuntu normally
3. Restore the backup after the upgrade:
cd / & & sudo tar xvfz backup_home.tar.bz2


Note: For this method to work well as new users should call The system old.

Restore installed programs
Another issue that may take a while after an installation is to reinstall all the programs we had with See by, however this can be solved with such only two commands:

1. Get the list of installed programs: Before the upgrade, the old system will get the list of programs installed with the command: sudo
  • dpkg - get-selections Save the file lista_de_paquetes.txt on a site that we know will not delete, such as a USB drive
2. Install the new system, installed the new Ubuntu normally

3. Reinstall all programs: After installation we will not have the software installed manually to retrieve the file will use
lista_de_paquetes.txt
as follows: cat
lista_de_paquetes.txt installed manually or using any other method.


Other customizations
may be the case we have any other customizations made manually over in the system, such as changing the system boot
/ boot
, files from a server web / var / www or system configuration files in
/ etc
to give a few examples.
In this case we will make a backup folder or affected folders and restore them in the updated system:

cd / & & sudo cvfz tar backup.tar.gz / folder1 / folder2 ... # Create backup
  • cd / & & sudo tar xvfz backup.tar.gz # Restore Backup
More

Ubuntuforums:
Instal · lar from dpkg - get-selections

  • Move / home to a separate partition :
    • http://psychocats.net/ubuntu/separatehome
(English) Restore
repositories (and their keys) manually added: http://www.linuxmint-hispano.com/foro/?/topic, 6036.0.html
Related Articles after 10 basic actions Ubuntu install


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