[Libguestfs] [PATCH nbdkit] docs: Suggest how to detect if a filter is installed.

Thanks: Eric Blake, Martin Kletzander. --- docs/nbdkit-probing.pod | 11 +++++++++++ 1 file changed, 11 insertions(+) diff --git a/docs/nbdkit-probing.pod b/docs/nbdkit-probing.pod index 94bdfb4..46a7c47 100644 --- a/docs/nbdkit-probing.pod +++ b/docs/nbdkit-probing.pod @@ -80,6 +80,17 @@ installed. A complete shell script which does this is: fi done +=head2 Detect if a filter is installed + +To find out if a filter is installed (and working) use +I<--dump-plugin> with the C<null> plugin and the name of the filter to +test: + + nbdkit --dump-plugin --filter=foo null + +This will fail with an error and non-zero exit code if the C<foo> +filter cannot be loaded. + =head1 SEE ALSO L<nbdkit(1)>. -- 2.23.0