# Upgrade Debian Wheezy to Debian Jessie

In this last week, I updated my RStudio in Debian Wheezy and it turned out that it needed a more recent version of the package lib6. A reliable solution was to upgrade my system to Jessie, the current stable distribution of Debian. Its latest update, Debian 8.1, was released on 6th of June, 2015.

For this reason, I share, in this post, the steps I followed for upgrading my system keeping user configuration and the main programs I use such as R, RStudio, Matlab, Mendeley, TeXstudio and others.

0) Backup your data: This is a logical initial step before starting any change on the system.

1.1) Prepare Debian Wheezy to be upgrading: Be sure that your current system does not have any problem of dependency or wrong installed packages. You can use the following commands for that purpose:

1.2) Update the repositories list: Packages for Debian Jessie is downloaded from these repositories. One way to update this list is to modify the file /etc/apt/sources.list, I use gedit for that:

In my case, I put the following repositories:

Another option is to change the wheezy word by jessie word automatically with the sed function.

1.3) Update the packages of Debian 8.1 Jessie.

During the upgrade it will ask if you want to restart manually or automatically some currently running services. It is suggested to make it manually.

Furthermore, after upgrading the distribution, I had to choose the device where grub should be installed. If it this your case, you should select the /dev/sda device if your pc has only one disk (use spacebar to choose the device). Otherwise, use the following link http://askubuntu.com/questions/23418/what-do-i-select-for-grub-install-devices-after-an-update.

1.5) Finally, reboot your computer to get the Debian Jessie system and enjoy.

2) Useful links to install programs:

2.1) Software R: http://cran.r-project.org/bin/linux/debian/

2.3) Texstudio: http://packages.debian.org/jessie/texstudio

2.4) Mendeley Desktop (Gestor de bibliografías): http://www.mendeley.com/

2.5) Dropbox: https://www.dropbox.com/

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