Subject: [PATCH] Document when substitutions are applied for RUN and other keys From: Andrey Borzenkov Signed-off-by: Andrey Borzenkov --- docs/udev.xml | 9 +++++++-- 1 files changed, 7 insertions(+), 2 deletions(-) diff --git a/docs/udev.xml b/docs/udev.xml index 7e29077..c94bdcd 100644 --- a/docs/udev.xml +++ b/docs/udev.xml @@ -353,8 +353,13 @@ The , , , - and fields support simple - printf-like string substitutions: + , and + fields support simple printf-like string substitutions. For + they are applied immediately before program + is launched, after all rules have been processed. It allows use of + complete environment set up by earlier rules including exported + variables. For all other fields substitutions are applied when rule + is being processed. The supported substitutions are: ,