What emacs editing mode gives us

首先看一下emacs editing mode都提供了哪些命令，这些命令实现了什么功能。

1. For current command line

 

1) Moving around/cursor motion

character level: CTRL-B, F

word level: ESC-B, F

line level: CTRL-A, E

 

2) Editing

Delete/Cut:

       character level: CTRL-H, D

       word level: ESC-BACKSPACE, D

       line level: CTRL-U, K

       non-blank word: CTRL-W

       CTRL-U and CTRL-W are control keys set up by the UNIX terminal interface, not emacs editing mode itself. They are kill and werase.

Undelete/Paste: CTRL-Y (for delete control keys listed above other than character level).

Transpose two characters: CTRL-T

Change word uppercase or lowercase: ESC-U, L, C

Quote insert: CTRL-V which is also set up by the UNIX terminal interface, lnext.

 

3) Textual Completion

Command Completion, Filename Completion, Username Completion, Hostname Completion and Variable Completion

List: CTRL-X-!, /, ~, @, $

Attempt: ESC--!, /, ~, @, $

Another two: TAB and ESC-?, also to attempt and just to list.

 

4) Others

Clear the screen: CTRL-L which is same as the clear command

 

2. For previous commands (based on the history list)

Recall: CTRL-P, N, R