tty

height := GetHeight()

if height == -1 {
	fmt.Println("Can't detect window size")
	return
}

fmt.Printf("Window height: %d\n", height)

Output:

width, height := GetSize()

if width == -1 && height == -1 {
	fmt.Println("Can't detect window size")
	return
}

fmt.Printf("Window size: %d x %d\n", width, height)

Output:

width := GetWidth()

if width == -1 {
	fmt.Println("Can't detect window size")
	return
}

fmt.Printf("Window width: %d\n", width)

Output:

if IsSystemd() {
	fmt.Println("This process started by systemd")
}

Output:

isTmux, err := IsTMUX()

if err != nil {
	panic(err.Error())
}

if isTmux {
	fmt.Println("App works in tmux")
} else {
	fmt.Println("App works in bare terminal")
}

Output:

if IsTTY() {
	fmt.Println("Output is TTY")
} else {
	fmt.Println("Output is not TTY")
}

Output: