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How to back up the software currently installed in Ubuntu

Source: Internet
Author: User
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The method for backing up the software installed in Ubuntu is simple. First, do not delete the/var/cache/apt directory. Run cp before installing the system, and then run cp after installation. Generate the content list of the currently installed software dpkg -- get-selections | grep-vdeinstall & gt; ubuntu. after files is reinstalled, configure sources. the method for backing up the currently installed software in list Ubuntu is simple. First, do not delete the/var/cache/apt directory. Run cp before installing the system, and then run cp after installation.

Generate a list of currently installed software content
Dpkg -- get-selections | grep-v deinstall> ubuntu. files

Configure sources. list after reinstalling

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