[Shell]Linux命令行初阶（一）

终端里写了一堆命令，发现前面有些单词错了，是全删了后面无辜的单词去改它吗？如果是这样就太dull了。这里介绍在终端里移动光标的方法，用的是Readline库的快捷键。

 

像bash、bc、gnuplot这样从行读入命令的软件都用了GNU Readline这个库，而它是有很多快捷键的，把它们都贴过来，用时看看吧～～

源地址：http://www.bigsmoke.us/readline/shortcuts

 

          Emacs keys
              Action
              Scope
              Direction/Place
     
   
       
          Moving around
              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

         
       

     

     
       
         
          Cut, copy
and paste
         
              Backspace
              Delete
              the character
              ⇦ to the left of the cursor
       


       
         
            DEL

            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
       

     

     
       
          History
              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
       

     

     
       
          Undo
             
            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
       

     

     
       
          Transpose
              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