A bash function that tries a command 3 times before failing with exit code 1

try3.sh

try3 () {
  for ((n=1;n<4;n++)); do
    if ! "$@"
      then
        echo "failed $n times..."
        if [[ $n = 3 ]]
          then exit 1
        fi
        sleep 1
      else
        echo "Completed after $n tries"
        break
      fi
  done
}