Stack Overflow messages.

$ shellcheck test-rsync.sh

In test-rsync.sh line 1:
SOURCE="/local\ folder/path/"
^-- SC2148: Tips depend on target shell and yours is unknown. Add a shebang.
        ^------------------^ SC2089: Quotes/backslashes will be treated literally. Use an array.


In test-rsync.sh line 3:
rsync -arv  --filter=":- .gitignore" $SOURCE $DESTINATION
                                     ^-----^ SC2090: Quotes/backslashes in this variable will not be respected.
                                     ^-----^ SC2086: Double quote to prevent globbing and word splitting.

For more information:
  https://www.shellcheck.net/wiki/SC2148 -- Tips depend on target shell and y...
  https://www.shellcheck.net/wiki/SC2089 -- Quotes/backslashes will be treate...
  https://www.shellcheck.net/wiki/SC2090 -- Quotes/backslashes in this variab...