ex

Command-line text editor. See also: vim. More information: https://www.vim.org.

• Open a file:

ex {{path/to/file}}

• Save and Quit:

wq<Enter>

• Undo the last operation:

undo<Enter>

• Search for a pattern in the file:

/{{search_pattern}}<Enter>

• Perform a regular expression substitution in the whole file:

%s/{{regular_expression}}/{{replacement}}/g<Enter>

• Insert text:

i<Enter>{{text}}<C-c>

• Switch to Vim:

visual<Enter>