只需使用

while IFS=$' \t\r\n' read -r line

即使每行回车返回字符( \ r )，也将排除前导和尾随空格.无需砍.

It would exclude leading and trailing spaces even carriage returns characters (\r) every line. No need to chomp it.

如果您仍然想在 \ n 和/或 \ r 之外添加其他空格，则不要指定其他空格:

If you still want to include other spaces besides \n and/or \r, just don't specify the others:

while IFS=$'\r\n' read -r line

如果您不喜欢使用IFS，另一种方法是修剪 \ r :

Another way if you don't like using IFS is just to trim out \r:

chomped_line=${line%$'\r'}

* -r 防止反斜杠转义任何字符.

  *  -r prevents backslashes to escape any characters.