nvim

Neovim, a programmer's text editor based on Vim, provides several modes for different kinds of text manipulation. Pressing i in normal mode enters insert mode. <Esc> goes back to normal mode, which doesn't allow regular text insertion. See also vim, vimtutor, vimdiff. More information: https://neovim.io.

• Open a file:
  nvim {{path/to/file}}
• Enter text editing mode (insert mode):
  <Esc>i
• Copy ("yank") or cut ("delete") the current line (paste it with P):
  <Esc>{{yy|dd}}
• Enter normal mode and undo the last operation:
  <Esc>u
• Search for a pattern in the file (press n/N to go to next/previous match):
  <Esc>/{{search_pattern}}<Enter>
• Perform a regular expression substitution in the whole file:
  <Esc>:%s/{{regular_expression}}/{{replacement}}/g<Enter>
• Enter normal mode and save (write) the file, and quit:
  <Esc>:wq<Enter>
• Quit without saving:
  <Esc>:q!<Enter>