linux - read -r 有什么作用？

Question

String="This is a string of words."

read -r -a Words <<< "$String"

我用man read命令查看，但是根本没有选项。我还尝试搜索模式 /-r。它没有结果。我怎样才能找到 -r 的实际作用？

Answer 1

read 是一个 shell 内置命令，您可以从 man bash 中找到有关它的信息:

read [-ers] [-a aname] [-d delim] [-i text] [-n nchars] [-N nchars] [-p prompt] [-t timeout] [-u fd] [name ...]
...
-r     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.