kak
kak
TLDR
Open a file and enter normal mode, to execute commands
$ kak [path/to/file]
Enter insert mode from normal mode, to write text into the file
$ i
Escape insert mode, to go back to normal mode
$ <Escape>
Replace all instances of "foo" in the current file with "bar"
$ %s[foo]<Enter>c[bar]<Escape>
Un-select all secondary selections, and keep only the main one
$ <Space>
Search for numbers and select the first two
$ /\d+<Enter>N
Insert the contents of a file
$ !cat [path/to/file]<Enter>
Save the current file
$ :w<Enter>