Become root inside vim

Scenario

• When you editing file(file which required root permission to edit) via vim without sudo, vim won't allow you to save the file
• For an example

vim /etc/hosts

• When doing changes vim says

• When saving file vim syas

Solution

• To overcome this problem you can type following command in vim

:w !sudo tee %

• Then vim will prompt for sudo password

• Finally hit L to load the changes into vim