

Except he provided it for identify verification, and if I was asked for this my assumption would be they need a mobile number to send a verification text message. If Google wanted a business number in order to publish it online they should state that clearly.
There are some useful options which can be found in the rsync manual although knowing which are redundant or conflicting can be tricky. If you run with the ‘n’ option first it will dry run, then you can remove the n to do the needful.
rsync -navhP --no-compress --ignore-existing --mkpath source dest -n dry-run, no changes are made -a is for archive, which recursively preserves ownership, permissions etc. -v is for verbose, so I can see what's happening (optional) -h is for human-readable, so the transfer rate and file sizes are easier to read (optional) -P show progress --no-compress as there's no lack of bandwidth between local devices --ignore-existing will skip updating files that exist on receiver -r is recursive, included in -a --mkpath will create the destination's path component