mention patc instead of hack

howto/puppet.md

@@ -552,14 +552,10 @@ change causes the `cumin` run to abort.
 Because the output `cumin` produces groups together nodes that return
 identical output, and because `puppet agent -t` outputs unique
 strings like catalog serial number and runtime in fractions of a
-second, it can be useful to pipe the Puppet agent output to `sed` to
-remove this noise. This way, all nodes on which the agent makes no
-modification are grouped in the report printed by `cumin`.
+second, we have made a wrapper called `patc` that will silence those
+and will allow cumin to group those commands together:
 
-    set -o pipefail ; puppet agent -t | sed -r "s/^\x1b\[[0-9;]*m//;s/^(Info: (Caching catalog|Applying configuration)).*/\1/;s/^(Notice: Applied catalog )in [0-9\.]+ seconds/\1/"
-
-Here `set -o pipefail` is used so that the return code from `sed`
-doesn't clobber the one from `puppet agent -t`
+    cumin -b 5 '*' 'patc'
 
 ## Adding/removing a global admin