我错误地发现了这一点： Control + x后面是Backspace
有谁知道为什么这清除线？ 任何文件？
是。 从man bash ：
Killing and Yanking kill-line (Ck) Kill the text from point to the end of the line. backward-kill-line (Cx Rubout) Kill backward to the beginning of the line.
这相当于Windows中的一个切入点。 你可以用Ctrl + Y粘贴它。
如上所述，这是在手册页。 更确切地说，这些键组合来自EMACS，这是许多Linux发行版中Bash的默认键绑定。 如果你需要在Bash下使用vi，你可以使用：
set -o vi
将其切换回EMACS：
set -o emacs
bash支持一种叫做readline库的东西，它允许你用你的shell做很多事情。 其中之一就是readlineconfiguration了大量的默认键盘快捷键 ，例如：
Ctrl-b Move the cursor one character ⇦ to the left Ctrl-f Move the cursor one character ⇨ to the right Alt-b Move the cursor one word ⇦ to the left Alt-f Move the cursor one word ⇨ to the right Ctrl-a Move the cursor ⇤ to the start of the line Ctrl-e Move the cursor ⇥ to the end of the line Ctrl-xx Move the cursor ⇤⇥ to the start, and to the end again Ctrl-d Delete the character underneath the cursor Ctrl-u Delete everything ⇤ from the cursor back to the line start Ctrl-k Delete everything ⇥ from the cursor to the end of the line Alt-d Delete word ⇨ untill before the next word boundary Ctrl-w Delete word ⇦ untill after the previous word boundary Ctrl-y Yank/Paste prev. killed text at the cursor position Alt-y Yank/Paste prev. prev. killed text at the cursor position Ctrl-p Move in history one line ⇧ before this line Ctrl-n Move in history one line ⇩ after this line Alt-> Move in history all the lines ⇩ to the line currently being entered Ctrl-r Incrementally search the line history ⇧ backwardly Ctrl-s Incrementally search the line history ⇩ forwardly Ctrl-J End an incremental search Ctrl-G Abort an incremental search and restore the original line Alt-Ctrl-y Yank/Paste arg. 1 of prev. cmnd at the cursor position Alt-. Alt-_ Yank/Paste last arg of prev. cmnd at the cursor position Ctrl-_ Ctrl-x Ctrl-u Undo the last editing command; you can undo all the way back to an empty line Alt-r Undo all changes made to this line Ctrl-l Clear the screen, reprinting the current line at the top Ctrl-l Clear the screen, reprinting the current line at the top Completion TAB Auto-complete a name Alt-/ Auto-complete a name (without smart completion) Alt-? List the possible completions of the preceeding text Alt-* Insert all possible completions of the preceeding text Ctrl-t Transpose/drag char. before the cursor ↷ over the character at the cursor Alt-t Transpose/drag word before the cursor ↷ over the word at/after the cursor
以下是关于定制readline的一些很好的信息 。