Using different options to run rsync

[lisa-asket]

Have various options to run `rsync` using a bash srcipt.  



I am duplicating code here, all those -av, --progress, $source, $destin are the 
same in both branches.

Perhaps it is best to avoid that.  Since I am running `bash`, I could collect 
the arguments to an array.



Would that be an improved strategy?


  if (( filetr_dryrun == 1 )); then 

    echo "rsync -av --progress --dry-run --log-file=$logfl"
    echo "  $source $destin"
    rsync -av --progress --dry-run --log-file="$logfl" "$source" "$destin"

  elif (( filetr_exec == 1 )); then
      
    # use rsync archive option -a (equivalent to -rlptgoD)
    echo "rsync -av --progress --log-file=$logfl $source $destin"
    rsync -av --progress --log-file="$logfl" "$source" "$destin"

  else

    echo "rsync -av --progress --log-file=$logfl $source $destin"
      
  fi