Re: Read user input from terminal when a pipe is used

[Scott Fial <scott@...>]

Hi Alexander,

On 12/6/2013 6:09 AM, Alexander Schulz wrote:
> Hey,
>
> i want to create a script with lua that reads from a pipe and allows to read input from the user terminal.
>
> Example: history -n | tail -n 10 | my_script
>
> In this case is io.stdin a file descriptor to the pipe.
> How can i get now in lua a file descriptor on the current terminal?

The following should work under Linux, OS X, and Cygwin:

-- open terminal explicitly
local tty = io.open('/dev/tty', 'r')

-- read a line from stdin (the pipe)
local stdin_line = io.read()

-- read a line directly from terminal
local tty_line = tty:read()

-- close terminal when done
tty:close()

Scott