Here are some of the tools I have used in the pass to do various things. If I have to use something today then that would be SSH and Ansible for any mass operations
For all small jobs I generally go with SSH safe and secure.
Here are some of the examples of how you can put SSH to use. Make sure you setup credential keys for ease.
www.cyberciti.biz/faq/unix-linux-execute-command-using-ssh
www.cyberciti.biz/faq/linux-unix-osx-bsd-ssh-run-command-on-remote-machine-server
Following is the tool that allows you execute commands on multiple hosts. This is Python based.
www.tecmint.com/execute-commands-on-multiple-linux-servers-using-pssh
Ansible:
ansible-tips-and-tricks.readthedocs.io/en/latest/ansible/commands/#running-ad-hoc-commands
On Windows machine I used PowerShell. I find powershell too complicated and cryptic
www.howtogeek.com/117192/how-to-run-powershell-commands-on-remote-computers