Github user ottobackwards commented on the issue:
https://github.com/apache/metron/pull/846
Thanks for the contribution! This is a great idea. If I may, I think this
may be more clear:
```bash
if docker info 2>&1 | grep -q 'Cannot connect to the Docker daemon'
then
echo "Docker daemon is not running"
else
echo "Docker daemon is running"
fi
```---
