Ubuntu backup and installation source address and installed software name

You must back up the list of installed software, software source, and user files Before reinstallation. back up the list of installed software packages dpkg -- get-selections & gt;/home/user/package. selections2. back up the user folder under Home. If you have already placed Home in an additional partition, this step is no longer required. Copy all the content in the user folder to another partition, be sure to include the hidden file (Ctrl + Hide) 3. back up the software source list, set/etc/

Back up the list of installed software, software source, and user files Before reinstallation

. Back up the list of installed software packages

Dpkg -- get-selections>/home/user/package. selections

2. Back up the user folder under Home

If you have already placed Home in an additional partition, this step is no longer required. Copy all the content in all user folders to another partition. Be sure to include a hidden file (Ctrl + Hide)

3. Copy the source list of the backup software and save the sources. list in the/etc/apt/folder.

Recovery after the new system is installed:

1. Copy the backup Sources. list file to the/etc/apt/directory of the new system, overwrite the original file, and replace the intrepid in the (Ctrl + H) document with jaunty. Then update the software source (sudo apt-get update ).

2. Re-download the software in the system before installation (if you have installed a large number of software, it may take a long time)

Sudo dpkg -- set-selections/home/package. selections & apt-get dselect-upgrade

3. Finally, paste the backup master folder (/home/user name) and overwrite the existing Master folder.

With this method, we can basically use the new Ubuntu system without losing the existing system and software settings!