shell - sh read 命令在输入中使用反斜杠？

Question

也许最容易用一个例子来解释:

$ echo '\&|'
\&|
$ echo '\&|' | while read in; do echo "$in"; done
&|

看来 read命令将输入​​中的反斜杠解释为转义符并删除它们。我需要逐行处理文件而不更改其内容，而且我不知道如何阻止阅读变得聪明。有任何想法吗？

Answer 1

根据:http://www.vias.org/linux-knowhow/bbg_sect_08_02_01.html :

-r
If this option is given, backslash does not act as an escape character. The backslash is considered to be part of the line. In particular, a backslash-newline pair may not be used as a line continuation.

它适用于我的机器。

$ echo '\&|' | while read -r in; do echo "$in"; done
\&|