Code review comment for ~ajorgens/cloud-init:pipe-cat

It seems like there is probably a better (or at very least less expensive) way to do this than to incur the cost of a subprocess.

I suspect
a.) change 'yum' to be invoked with '--quiet' or the like
b.) close and re-open stdout or something like that. yum is probably using 'isatty' to change its behavior.