VIM usage

3 Patterns

• Command line mode （command mode）
• Insertion mode （insert mode）
• last line node （last line mode）

Mode switch

• start-up vim Enter command line mode
• Press down i Key into insert mode
• Input “:” Enter the baseline command mode
• Press... In insert mode Esc Key to enter command line mode
• Press... In the baseline command mode Esc Key or delete “:” Enter command line mode

Command line mode

# Find and replace 
/< What to look for >
 The result of the search is next 、 the previous ：n N

# edit 
 Undo last operation ：u
 Delete the cursor position character ：x
 Delete a line ：dd
 Duplicate a row ：yy
 Paste one line below the cursor 、 Last line ：p P
 Insert an empty line next to the cursor 、 Last line ：o O（ Will enter edit mode ）
 Insert at end of current line ：A（ Will enter edit mode ）

 Move the cursor to the beginning and end of the line ：HOME key  END key 
 Move the cursor to the first non empty character of the line , The last non empty character ：^ $
 Move the cursor to x That's ok 、 first line 、 The last line ：xG gg GG

last line node

# Replace 
 Replace the first... In the current line 、 all ：s/< Original value >/< Replacement value > s/< Original value >/< Replacement value >/g
 Replace the first of all lines 、 all ：%s/< Original value >/< Replacement value > %s/< Original value >/< Replacement value >/g

# Exit and save 
 Exit without saving ：q!
 preservation ：w
 Save and exit ：wq