macOS / binaries /

lsregister

/usr/local/bin/lsregister
Reset the Launch Services database

lsregister resets the Launch Services database.

source: ss64.com
/System/Library/Frameworks/CoreServices.framework/Versions/A/Frameworks/LaunchServices.framework/Versions/A/Support/lsregister
Reset the Launch Services database

The lsregister command is used to query and manage the Launch Services database, or the database that is used to determine the default application used to open files of various types.

The binary is a part of CoreServices public framework.

source: krypted.com