Bash PS1 为 root 显示 $ 而不是 #

Bash PS1 shows $ instead of # for root

提问by dook

When logging into root, the default prompt when echoed is \s-\v\$, which shows as bash-4.2#. I am trying to play around with the bash prompt so it displays the working directory. export PS1="\w \$".

登录 root 时，回显时的默认提示是\s-\v\$，显示为bash-4.2#。我正在尝试使用 bash 提示符，以便它显示工作目录。 export PS1="\w \$".

The prompt displays correctly, however, the symbol \$does not transform into a #, even though my $UIDis 0, which kind of defeats the purpose of omitting the user symbol \u. Is there something extra I have to add, or does that symbol not work if I export it?

提示显示正确，但是符号\$并没有转换为 a #，即使 my$UID是 0，这违背了省略用户符号的目的\u。我是否需要添加一些额外的东西，或者如果我导出它，该符号是否不起作用？

回答by Keith Thompson

export PS1="\w $"

This doesn't set $PS1to \w \$, it sets it to \w $, as you can see if you type:

这不会设置$PS1为\w \$，而是将其设置为\w $，正如您在键入以下内容时所看到的：

echo "$PS1"

Use single quotes:

使用单引号：

export PS1='\w $'

回答by wuxb

the slash will be gone in the "". Just need to add one more to keep it. Either

斜线将在“”中消失。只需要再添加一个来保留它。任何一个

export PS1='\w $'

or

或者

export PS1="\w \$"

works for you.

为你工作。

You can combine '' and "". For example:

您可以组合 '' 和 ""。例如：

export PS1="\w blabla"'$'

回答by vikram99

You could use this:

你可以用这个：

export PS1="\w \$"

I don't know why it works. But it works.I have originally seen this here: cyberciti

我不知道它为什么有效。但它有效。我最初在这里看到这个：cyberciti