How do you exit vim in Linux?

“Hit the Esc key,” dirvine says. Once you hit escape, “vim goes into command mode.” From there, dirvine offers nine commands you can enter to actually get out of Vim: :q to quit (short for :quit)

How do I save and exit in Linux?

Press Esc to enter Command mode, and then type :wq to write and quit the file. The other, quicker option is to use the keyboard shortcut ZZ to write and quit.
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More Linux resources.