[ara24]

As has already been said, bash brace expansion is quite powerful. It has many usecases, such as,

  diff file{.original,}
  mkdir -p path/{a,b,c}/folder
  for i in image{001..060}; do echo $i; done

Parameter Expansion is also equally useful, like changing a few characters in long names,

  mv ${i}.png ${i/imaeg/image}.png