retry3

#!/usr/bin/env bash

function retry3 {
  local n=1
  local max=3
  local delay=1
  while true; do
    # shellcheck disable=SC2015
    "$@" && break || {
      if [[ $n -lt $max ]]; then
        ((n++))
        echo "Command failed. Attempt $n/$max:"
        sleep $delay;
      else
        echo "The command has failed after $n attempts." >&2
        return 1
      fi
    }
  done
}

if [[ "${BASH_SOURCE[0]}" == "${0}" ]]; then
  retry3 "$@"
fi