I discovered this by mistake: Control+x followed by Backspace
Does anyone know why this clears the line? Any documentation?
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bash supports something called the
readline library, which allows you to do a completely amazing number of things with your shell. One of those things is that
readline comes configured with a large number of default keyboard shortcuts, such as:
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-x-x 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
Here's some good information on customizing
readline as well.