vi编辑器的使用（The use of the VI editor）.docVIP

vi编辑器的使用（The use of the VI editor） The use of the VI editor First, the working model of VI VI has two modes of work: Edit mode: a mode for entering and editing files. The users typing is displayed on the screen. The key is not interpreted as command execution, but is written into the users file as text. Instruction mode: the mode used to edit, save, and exit files. After you run VI, you first enter the instruction mode. Any character entered at this time is considered an instruction, and the command entered does not appear on the screen. From the command mode to the edit mode, you can press the Insert key or the I key to switch from edit mode to command mode, and press the Esc key. The status line is the bottom line of the screen and is used by the VI editor to feed back the edit results. An error message or a message that provides information is displayed in the status line. Two, VI start and exit 1. start VI Under system icon characters, type VI + space + file name, such as: VI test.txt VI automatically loads the files you want to edit or opens a new file. 2. quit VI In the command mode, type the following command to exit vi: Q: if the user reads only the contents of the file and does not modify the file, you can enter Q in command mode and exit VI. Q: if the user changes the contents of the file and decides to give up the modification of the file, use the Q command. W: force to save a VI file. If the file already exists, it is covered. : WQ save the file and exit VI. ZZ quickly saves the contents of the file and then exits VI. Function and : WQ the same. W filename is equivalent to save as. : n, MW, filename saves the text of line N-M to the specified file filename. Three 、 VI long instruction and short instruction Long instruction: start with the colon and type the colon. At the end of the screen, there is a colon prompt, wait for the user to type in the instruction, enter the carriage after entering the command, and the VI will execute the instruction. Paragrap