在终端输入空字符 [英] Type null character in terminal

问题描述

是否可以在终端中键入空字符?

我想做类似的事情:

this is a sentence (null) test123

解决方案

在Linux中，可以通过按 Ctrl + v 紧跟在终端上，从字面上插入任何特殊字符.由实际的符号. null通常是^@，其中^表示 Ctrl ，而@表示在键盘布局上产生 @ 的任意组合.

所以我在键盘上执行: Ctrl + v ，然后是 Ctrl + Shift + @ ，我得到一个带有显着背景色的^@符号.这意味着它是一个特殊字符，而不仅仅是键入^和@.

几年后，不同的终端使用键盘布局实现了一些输入变化，这些布局要求按下 Shift 才能访问 @ . /p>

• Ctrl + v ，然后是 Ctrl + Shift + @
• Ctrl + v ，然后按 Shift + @ 无，释放 Ctrl .
• Ctrl + Shift + v 后跟 @ 无，释放 Ctrl + Shift .
• Ctrl + Shift 释放 Shift 并再次按 Shift 并保持两个 Ctrl + Shift ，然后按下 v ，最后按下 @ .在某些在 Ctrl + Shift 上实现特殊输入的终端中可以看到.

Is there a way to type the null character in the terminal?

I would like to do something like:

this is a sentence (null) test123

解决方案

In Linux, any special character can be literally inserted on the terminal by pressing Ctrl+v followed by the actual symbol. null is usually ^@ where ^ stands for Ctrl and @ for whatever combination on your keyboard layout that produces @.

So on my keyboard I do: Ctrl+v followed by Ctrl+Shift+@ and I get a ^@ symbol with a distinguished background color. This means it's a special character and not just ^ and @ typed in.

Edit: Several years later and a few input variations implemented by different terminals using keyboard layouts that require pressing Shift to access @.

• Ctrl+v followed by Ctrl+Shift+@
• Ctrl+v followed by Shift+@ without releasing Ctrl.
• Ctrl+Shift+v followed by @ without releasing Ctrl+Shift.
• Ctrl+Shift release Shift and re-press Shift keeping both Ctrl+Shift pressed followed by v and finally @. Seen in some terminals that implement a special input on Ctrl+Shift.

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