bash shell 里的 soft quoting 问题

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This topic created in 4055 days ago, the information mentioned may be changed or developed.

soft quoting 里面有$,!,`和\这个四个不会禁用。
但是为什么
[root@ZZZZ ~]# echo "\n"
\n

而
[root@ZZZZ ~]# echo "\\"
\

我已经搞晕了。。

4 replies • 2015-10-03 19:06:14 +08:00

Ansen

Oct 3, 2015 via iPhone

echo "/\n"

lululau

Oct 3, 2015

The backslash retains its special meaning only when followed by one of the following characters:
$, `, ", \, or <newline>.

blueionic

Oct 3, 2015

@Ansen LZ 的意思是如果按照 soft quoting 的说法，""不会 disable 掉\，所以 echo "\n"应该会得到 n ，而不是\n 。

blueionic

Oct 3, 2015

@lululau get 到点了。。谢谢！