4.4-vi Command

Preface
VI learning
common commands
Command Mode (ESC enter)
view
into edit mode
Edit mode
search
copy and paste
the Save As
execution to shell

TOC

"Embedded Linux Development Basics"

Foreword

• Remote access need to use the shell built-in text editor, you must learn basic skills
• HELLOWORLD program as an example to the basic program editing, compiling, debugging, practice!

VI Learning

• There are three states: Edit mode, insert mode and command mode, when you enter vi, will be the first to enter the command mode (also edit mode), press i to enter insert mode, press ESC back to the command state (also edit mode)

• In the insert mode, can not enter the instruction, you must first press <Esc> key, return to command mode. If users do not know where he will state may be press <Esc> key, no matter in what state, will return to command mode. When you modify a file, quit and how to archive specified files are very important. In vi, the exercise archive or exit command, first by a colon (:), change the command mode, the user can see at the bottom left of the screen, there colon (:), has been changed to display the vi command mode, you can conduct such as archiving or quit working.

Common Commands

Command Mode (ESC to enter)

View

• Exit abandon Archive:q!
• Read-only file archive force:w!
• Archive and exit:x
• Jump to line nnG
• Displays the current number of ranksCtrl+G
• Left and right up and downh j k l

Enter edit mode

• Before the cursor after the character location inserti a r

  i=insert; a=append; r=replace;

• Inserted at the beginning of a lineI
• End of the line insertedA
• Under the new open line cursoro
• The new open line above the cursorO

Edit mode

• Clear entire line begins to fillcc
• Delete current characterx
• After you remove the cursor n charactersnx
• Delete the cursor first n charactersnX
• After you remove the cursor n wordsndw
• Delete the entire linedd
• Delete the cursor to the end of the lineD
• go backu

search for

• Reverse search the file until the beginning of str?str <return>
• Repeat retrievaln N

Copy and Paste

• Open the two filesvi file1 file2
• Copy rowyy
• Switch to next file:n
• Pasted at the current cursorp
• Switch back to file:n

Save as

• Save as file between rows:20,59w /tmp/1

Go to execute shell

• :!s