如何为读取命令添加换行符? [英] How do I add a line break for read command?

问题描述

 read -p "Please Enter a Message:" message

如何在Message:之后添加换行符?

How can I add a line break after Message:?

推荐答案

我喜欢

I like Huang F. Lei's answer, but if you don't like the literal line break, this works:

read -p "Please Enter a Message: `echo $'\n> '`" message

显示:

Please Enter a Message:
> _

...其中_是光标结束的位置.请注意，由于通常在命令替换过程中会删除尾随的换行符，因此我在之后添加了>.但是实际上，您最初的问题似乎不需要提示，所以:

...where _ is where the cursor ends up. Note that since trailing newlines are usually dropped during command substitution, I've included the > afterward. But actually, your original question doesn't seem to want that prompt bit, so:

# Get a carriage return into `cr` -- there *has* to be a better way to do this
cr=`echo $'\n.'`
cr=${cr%.}

# Use it
read -p "Please Enter a Message: $cr" message

显示

Please Enter a Message:
_

不过，必须有更好的方法.

There has to be a better way, though.

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