1. look for changes to /tmp/file-1 file
a. if there is a change, execute in the following order
i. run cmd-3
ii. run cmd-2
iii. run cmd-1
b. If there is NO change to /tmp/file-1 file, do not run anything
You need: firstly, for all of the execs to subscribe to the file resource; secondly, for each of those to also require their preceding exec resources; and thirdly, for each exec to be set to refreshonly.