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Undo Changes in Vim / Vi To undo changes in Vim and Vi use the u , :u or :undo commands: If you are in insert or any other mode, press the Esc key to go back to the normal mode, which is also known as command mode. Type u to undo the last change.
Basic Find and Replace To go back to normal mode from any other mode, just press the 'Esc' key.
Ctrl-w = tells Vim to assign an equal number of lines to each viewport.
To enter Insert mode, press i . In Insert mode, you can enter text, use the Enter key to go to a new line, use the arrow keys to navigate text, and use vi as a free-form text editor. To return to Command mode, press the Esc key once.
I use Ctrl-O
I frequently use Ctrl-6 for this.
It's handy because it allows me to quickly jump back and forth between the two files.
You might want to use CTRL-W gf to open the file in a new tab.
You can close the newly opened file as always with :bd, or use CTRL-6 and other usual ways of changing buffers.
Just use :e# followed by Enter - that basically says to edit the last (most recent) file.
Use gf to descend into a file and use :bf to get back
Ctrl-Shift-6 is one.
:e#↲ is another.
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