Get sudo permissions when Vim is saved

In the maintenance of online services, often to edit some files that do not belong to the operation of the user, that is, only the type of R permission, each save will prompt read only. Can only be noted to change what, and then quit, and then sudo vim to do the save.

The following command can not exit the VIM process, directly with the VIM command to get sudo permissions, and then directly save the file.

1	:w ! sudo tee %

Command: W! {cmd}, let vim execute an external command {cmd}, and then pass the contents of the current buffer from stdin.

Tee is a gadget that saves stdin to a file.

and%, is the name of a read-only register in Vim, which always holds the file path of the currently edited file.

So executing this command is equivalent to modifying the currently edited file from the outside of vim.

Get sudo permissions when Vim is saved