Based on gist.github.com/1325982 by Ash Berlin
"Since chef v0.10 you can send USR1 to the chef-client process and it will wake up and do a run. But the usual case when I want to do a run is cos I'm either testing a cookbook change or I want to deploy now. I could just run sudo chef-client but then that will only log to std out. Just run this script, it will send chef-client a USR1 signal and then tail the log file (but nicely so that you'll get your terminal back when the run completes)."
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