Ubuntu and Linux Mint use nano as their default editor. You’ll see it if you try to edit crontab or visudo. Now, there’s nothing wrong with nano, but I prefer using vim instead. Here’s how to change the default editor.

<pre lang="bash">sudo update-alternatives --config editor

You’ll be prompted to change the default editor.

<pre lang="bash">
There are 4 choices for the alternative editor (providing /usr/bin/editor).

  Selection    Path                Priority   Status
  0            /bin/nano            40        auto mode
  1            /bin/ed             -100       manual mode
  2            /bin/nano            40        manual mode
* 3            /usr/bin/vim.basic   30        manual mode
  4            /usr/bin/vim.tiny    15        manual mode

Press <enter> to keep the current choice[*], or type selection number: 

Type 3 to choose vim basic.