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>