vim E45：“readonly” option is set(add ! to override)

:w !sudo tee %
:set noro
:!chmod +w %
:e
 

:set noreadonly

:q!

vim ~/.vimrc 

add set noreadonly

 

 

https://vi.stackexchange.com/questions/14073/vim-is-in-read-only-mode

https://unix.stackexchange.com/questions/71109/how-can-i-exit-from-read-only-mode-in-vim#:~:text=If%20the%20file%20is%20read%20only%2C%20you%20have,then%20the%20file%20will%20be%20successfully%20written%20to.

https://unix.stackexchange.com/questions/71109/how-can-i-exit-from-read-only-mode-in-vim