Hosts, simple bash tool to run commands on several hosts

BigInsights  (IBM Hadoop) requires a number of prerequisites to have the cluster consistent. For instance: /etc/hosts file should be the same on all hosts. There are plenty of tools available, but finally, I decided to create a small tool on my own.
The tool is available here (branch hosts).
There are several simple bash procedures allowing copying and executing a single command on all hosts in the cluster. For instance: install a required package using yum command on all hosts.
Basically, two main tasks are implemented:

• Share file across hosts (for instance /etc/hosts)
• Run a single command on all hosts (for instance yum install package)

These two simple tools fulfill almost all tasks necessary to prepare and run the multi-host installation of BigInsights and IBM streams.

More details and description here.