Occasionally, a package shows a post-install message. How can I replay this message for a given package on a Debian system?
Compare to FreeBSD:
pkg info -D PACKAGE
Compare to MacPorts:
port notes PACKAGE
What's the Debian equivalent?
If the message is also included in the package’s changelog or news, you can consult those to see it again; see How can I review some release notes? for details.
If the message was displayed by the package itself as part of its installation, there’s no general rule. You can try
sudo dpkg-reconfigure -plow PACKAGE
to re-run the package configuration, which might show the message again; but some packages remember what they’ve shown, to avoid showing it twice... In such cases you could look at the package ”templates” in
/var/lib/dpkg/info/PACKAGE.templates, or examine its post-installation script in
/var/lib/dpkg/info/PACKAGE.postinst to figure out what it does, but that’s hardly a generalisable approach. For example,
debian-security-support can be reset by deleting
sudo dpkg-reconfigure debian-security-support will then show its information again.