linux-file-count.yml does not work as-is

[jdezego]

Example file:

https://github.com/newrelic/nri-flex/blob/master/examples/linux/linux-file-count.yml

As it stands this does not work. The "e" in the echo command makes its way into the output that gets sent to New Relic and the entire JSON string output just gets added to the linuxFileCountSample event with a hyphen as the column header name.