How do I save a Linux output to a file?

To use bash redirection, you run a command, specify the > or >> operator, and then provide the path of a file you want the output redirected to. > redirects the output of a command to a file, replacing the existing contents of the file.

How do I save and exit in Linux?

Press the [Esc] key and type Shift + Z Z to save and exit or type Shift+ Z Q to exit without saving the changes made to the file.