Script for copy one server to another then sleep for 1 min

#!/bin/bash
echo "test"
i=0
unit=100

for file in /home/harish/a/*;
do
  cp  "$file" /home/harish/c
  if [[ "$i" -ge "$unit" ]];
then
    sleep 1M
   i=0
  fi
 ((i++))
done