dpkg
SafeQuery deb packages
dpkg -l | grep <pkg>
Lists/queries installed debs. -S maps files to packages; -i installs a local .deb.
Examples
dpkg -S /usr/sbin/nginxFind owning package
Syntax
dpkg [-l] [-S file] [-i file.deb]
Before you run it
Queries safe; -i may leave broken deps.
The same reference, with no signal at all
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