我想改变一个文本文件。假设我在第 22 行有一些文本，我想将第 22 行设为空白并将第 22 行的文本向下移动到第 23 行。为了说明这一点，我想把这个 ( printf 'Some %d text\n' {1..23})：
Some 1 text
Some 2 text
Some 3 text
Some 4 text
Some 5 text
Some 6 text
Some 7 text
Some 8 text
Some 9 text
Some 10 text
Some 11 text
Some 12 text
Some 13 text
Some 14 text
Some 15 text
Some 16 text
Some 17 text
Some 18 text
Some 19 text
Some 20 text
Some 21 text
Some …