How to run dpkg-reconfigure and how is it different?
Run postinst script, if provided by the package. dpkg-reconfigure – reconfigure an already installed package -pvalue, –priority=value Specify the minimum priority of question that will be displayed. dpkg-reconfigure normally shows low priority questions no matter what your default priority is.
How to install a package in dpkg ( 1 )?
If –recursive or -R option is specified, package-file must refer to a directory instead. Installation consists of the following steps: 1. Extract the control files of the new package. 2. If another version of the same package was installed before the new installation, execute prerm script of the old package.
Can a default frontend be changed in dpkg?
The default frontend can be permanently changed by: Note that if you normally have debconf set to use the noninteractive frontend, dpkg-reconfigure will use the dialog frontend instead, so you actually get to reconfigure the package.
Is there a back end to dpkg query?
If any such action is encountered dpkg just runs dpkg-deb or dpkg-query with the parameters given to it, but no specific options are currently passed to them, to use any such option the back-ends need to be called directly. dpkg maintains some usable information about available packages.
Which is the dpkg command to update a package?
With action –update-avail, old information is replaced with the information in the Packages-file. The Packages-file distributed with Debian are named Packages. dpkg keeps its record of available packages in /var/lib/dpkg/available. A simpler command to retrieve and update the available file is dselect update.
How to print the architecture of a dpkg install?
Print architecture of packages dpkg installs (for example, “i386”). Print a newline-separated list of the extra architectures dpkg is configured to allow packages to be installed for.
What does update-alternatives do in Debian?
update-alternatives creates, removes, maintains and displays information about the symbolic links comprising the Debian alternatives system. It is possible for several programs fulfilling the same or similar functions to be installed on a single system at the same time. For example, many systems have several text editors installed at once.
When to call update alternatives in Debian Jessie?
When each package providing a file with a particular functionality is installed, changed or removed, update-alternatives is called to update information about that file in the alternatives system. update-alternatives is usually called from the postinst (configure) or prerm (remove and deconfigure) scripts in Debian packages.
When does update-alternatives switch to manual mode?
If the system administrator makes changes to the system’s automatic settings, this will be noticed the next time update-alternatives is run on the changed link’s group, and the group will automatically be switched to manual mode. Each alternative has a priority associated with it.