How to Get Single Character Input in Go Without Pressing Enter?

Obtaining Character Input Without Pressing Enter in Go

In order to avoid pressing the Enter key after receiving character input in Go, you can utilize the following approach.

1. Disable Input Buffering:
   Run the command exec.Command("stty", "-F", "/dev/tty", "cbreak", "min", "1").Run() to disable input buffering. This allows the program to read a character immediately upon pressing a key.
2. Suppress Echo
   Execute the command exec.Command("stty", "-F", "/dev/tty", "-echo").Run() to suppress the display of entered characters on the screen.
3. Read a Single Byte
   Use os.Stdin.Read(b) to read a single byte (character) from the standard input. This will work even if the user doesn't press Enter after entering a character.

4. Example
   The following code illustrates how to implement this approach:

   package main
   
   import (
       "fmt"
       "os"
       "os/exec"
   )
   
   func main() {
       // disable input buffering
       exec.Command("stty", "-F", "/dev/tty", "cbreak", "min", "1").Run()
       // do not display entered characters on the screen
       exec.Command("stty", "-F", "/dev/tty", "-echo").Run()
   
       var b []byte = make([]byte, 1)
       for {
           os.Stdin.Read(b)
           fmt.Println("I got the byte", b, "("+string(b)+")")
       }
   }

This solution provides a similar functionality to Console.ReadKey() in C# by allowing you to read a single character without waiting for the user to press Enter.

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