Vi column Mode

We can see that vi has the column mode, that is, you can insert some content in batches in a column of a specified row. It is quite practical and the record is as follows.

Original content

Press ctrl + v in command mode (ctrl + q in windows, if you use ms compatibility mode, because ctrl + v is occupied by windows) to enter the visual block mode, when you move the cursor, you can find that some columns in the row are selected, and the position of the columns in the selected row will insert the same content. Here we use the insert content in a column, so place the cursor at the position to insert, select the row, and press shift-I (if you want to insert after the cursor, press shift-a for the reason you know), enter the content you want to insert, and then press ecs. You can see that the specified column of the selected row inserts the same content.

Here I select the first three rows, and the third row has a cursor, so you cannot see the blue selection mark, but do not doubt that it is selected.

Insert hehe