Add a check for the rsync command within bin/installto.sh script

[JulianAtkins]

Prerequisites

• I have searched for duplicate or closed feature requests
• I have searched for plugins that provide already provide the feature

Proposal

Please add a check for the existence of the rsync command, in the bin/installto.sh script.

Currently there is no such check and the script fails with:

Copying files to target location...sh: line 1: rsync: command not found

Motivation and context

It would be "nice" to check first and inform the user that the rsync command is required.

Thank you!

[pabzm]

That's a good idea, thank you!

Would you maybe be interested in contributing a patch to implement the check?