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There is one very handy package on OpenBSD named `pkglocatedb`
which provides the command `pkglocate`.
If you need to find a file or binary/program and you don't know
which package contains it, use pkglocate.
$ pkglocate */bin/exiftool
p5-Image-ExifTool-12.00:graphics/p5-Image-ExifTool:/usr/local/bin/exiftool
With the result, I know that the package `p5-Image-ExifTool` will provide me
the command `exiftool`.
Another example looking for files containing the pattern "libc++"
$ pkglocate libc++
base67:/usr/lib/libc++.so.5.0
base67:/usr/lib/libc++abi.so.3.0
comp67:/usr/lib/libc++.a
comp67:/usr/lib/libc++_p.a
comp67:/usr/lib/libc++abi.a
comp67:/usr/lib/libc++abi_p.a
qt4-4.8.7p23:x11/qt4,-main:/usr/local/lib/qt4/mkspecs/unsupported/macx-clang-libc++/
qt4-4.8.7p23:x11/qt4,-main:/usr/local/lib/qt4/mkspecs/unsupported/macx-clang-libc++/Info.plist.app
qt4-4.8.7p23:x11/qt4,-main:/usr/local/lib/qt4/mkspecs/unsupported/macx-clang-libc++/Info.plist.lib
qt4-4.8.7p23:x11/qt4,-main:/usr/local/lib/qt4/mkspecs/unsupported/macx-clang-libc++/qmake.conf
qt4-4.8.7p23:x11/qt4,-main:/usr/local/lib/qt4/mkspecs/unsupported/macx-clang-libc++/qplatformdefs.h
qtbase-5.13.2p0:x11/qt5/qtbase,-main:/usr/local/lib/qt5/mkspecs/linux-clang-libc++-32/
qtbase-5.13.2p0:x11/qt5/qtbase,-main:/usr/local/lib/qt5/mkspecs/linux-clang-libc++-32/qmake.conf
qtbase-5.13.2p0:x11/qt5/qtbase,-main:/usr/local/lib/qt5/mkspecs/linux-clang-libc++-32/qplatformdefs.h
qtbase-5.13.2p0:x11/qt5/qtbase,-main:/usr/local/lib/qt5/mkspecs/linux-clang-libc++/
qtbase-5.13.2p0:x11/qt5/qtbase,-main:/usr/local/lib/qt5/mkspecs/linux-clang-libc++/qmake.conf
qtbase-5.13.2p0:x11/qt5/qtbase,-main:/usr/local/lib/qt5/mkspecs/linux-clang-libc++/qplatformdefs.h
As you can see, base sets are also in the database used by pkglocate,
so you can easily find if a file is from a set (that you should
have) or if the file comes from a package.
Klemmens Nanni (kn@) told me it's possible to find which package
installed a file present in the filesystem using `pkg_info` command
which comes from the base system. This can be handy to know from
which package an installed file comes from, without requiring
pkglocatedb.
$ pkg_info -E /usr/local/bin/convert
/usr/local/bin/convert: ImageMagick-6.9.10.86p0
ImageMagick-6.9.10.86p0 image processing tools
This tells me `convert` binary was installed by ImageMagick package.