Vim Select all, copy all, delete all

Select All (Highlight ): Press ESC, then GGVG or GGVG

Copy all: press ESC, then GGYG

Delete all: press ESC, then DG

Analytical:

GG: is to let the cursor move to the first line, the vim is valid, vi invalid

V: is into Visual (visual) mode

G: Move the cursor to the last line

After the selection of content can be other operations, such as:
d Delete the selected content
y Copy the selected contents to register No. No. 0
"+y Copy the selected content to the + register, which is the clipboard of the system for other programs

Vim Select all, copy all, delete all