diff --git a/Deconstructing_Linux_udev_Rules.rst b/Deconstructing_Linux_udev_Rules.rst index 5e606d9..8115c52 100644 --- a/Deconstructing_Linux_udev_Rules.rst +++ b/Deconstructing_Linux_udev_Rules.rst @@ -335,12 +335,12 @@ "But why", you may ask, "are you using the ``RUN==`` construct? Isn't that what ``PROGRAM==`` does?" Not exactly, Grasshopper. - ``PROGRAM==`` *always* runs regardless of prior matching. - That's because ``PROGRAM==`` is itself a *matching* key-value - construct. It's used to *figure out* whether a match has - taken place. It this has to run every time. ``RUN==``, - on the other hand, *only* runs if all prior matching has - been successful. + ``PROGRAM==`` *always* runs regardless of prior matching. That's + because ``PROGRAM==`` is itself a *matching* key-value construct. + It's used to *figure out* whether a match has taken place (by + means of it populating ``RESULTS``). It this has to run every + time. ``RUN==``, on the other hand, *only* runs if all prior + matching has been successful. Why is that important here? Say we boot the system, and the kernel discovers drives ``/dev/sdh, /dev/sdi,`` and ``/dev/sdj`` @@ -458,7 +458,7 @@ Document Revision Information ============================= -``$Id: Deconstructing_Linux_udev_Rules.rst,v 1.115 2013/11/01 03:21:43 tundra Exp $`` +``$Id: Deconstructing_Linux_udev_Rules.rst,v 1.116 2013/11/01 03:22:50 tundra Exp $`` You can find the latest version of this document at: