deb-extra-override - Linux
Overview
The deb-extra-override
command is a utility used to manage extra package metadata in Debian package management. It allows you to override the default metadata in the package database with user-defined values. This is useful for customizing or locally modifying package behavior.
Syntax
deb-extra-override [options] package-name [key=value]...
Options/Flags
- -s, –show-override: Display the current override values for the specified package.
- -d, –delete-override: Delete all override values for the specified package.
- -f, –source-list: Specify the source list to use when overriding metadata.
- -o, –override-file: Specify an override file to read from or write to.
Examples
Simple Override
Set the Priority
field of the nano
package to required
:
deb-extra-override nano Priority=required
Complex Override
Override multiple fields of the apache2
package using an override file:
# my-apache-override.conf
Source: override.debian.org
Priority: required
Section: admin
Then apply the override:
deb-extra-override -o my-apache-override.conf apache2
Restoring Defaults
Delete all overrides for the openssh-server
package:
deb-extra-override -d openssh-server
Common Issues
- Package not found: Ensure that the specified package is installed and exists in the package database.
- Permission denied: Verify that you have sufficient permissions to modify package metadata.
Integration
deb-extra-override
integrates with the apt
package management system. Override values set with deb-extra-override
are used during package installation and update.
Related Commands
apt
: Main package management command.dpkg
: Package installation and manipulation tool.apt-preferences
: Set package priorities and sorting rules.