In general, you should strive to keep your RUN lines as simple as possible,
using them only to run tools that generate textual output you can then examine.
-The recommended way to examine output to figure out if the test passes it using
+The recommended way to examine output to figure out if the test passes is using
the :doc:`FileCheck tool <CommandGuide/FileCheck>`. *[The usage of grep in RUN
lines is deprecated - please do not send or commit patches that use it.]*