tty

I have an application that needs to behave differently if run directly from the linux console. So if a user connects with SSH to run FooBar, or the user walks over to the console and logs in directly to run FooBar, I want it to do something different. What C API do I need to call to tell the difference between these two scenarios? I was thinking I'd have to look at the "tty/pts" information (such as what I see when I run "ps axf"), but I'm not certain if that is the best solution, nor what API to call to get that information. Hints appreciated. :) Checking the return value of ttyname(3)

I am coding with Go 1.2 on Ubuntu 12.04 LTS machine - using LiteIDE (very pleased with it). I downloaded and installed the go termbox package - built the demo keyboard.go - built fine. But when I run from LiteIDE, I get this panic - same happens with all the termbox demos: panic: open /dev/tty: no such device or address Any clues would be helpful.... OK, that's completely reasonable: interactive terminal applications require, well, terminal to be available. Terminals may be real— hardware —or virtual (like Linux virtual terminals you see on a typical x86 box when you hit Ctrl-Alt-F1) or

I'm writing some code that reads and writes to serial device using boost::asio class. However, when sending several strings between programs, I've noticed that on the receiving program the data is read in the order as it was written to the serial port, and not as the data is sent from the other program - If I start reading data some seconds later, I don't get the values that I am sending at the moment but those that were sent previously. I'm assuming this is caused by how I am setting up my boost::asio::serial_port : int main(int argc, char const *argv[]){ int baud=atoi(argv[1]); std::string

I'm working on an application controller for a program that is spitting text directly to /dev/tty. This is a production application controller that must be able to catch all text going to the terminal. Generally, this isn't a problem. We simply redirect stdout and stderr. This particular application is making direct calls to echo and redirecting the result to /dev/tty ( echo "some text" > /dev/tty ). Redirects via my application controller are failing to catch the text. I do have the source for this application, but am not in a position to modify it, nor is it being maintained anymore. Any

I have added a user like this: $ adduser --system --home /no/home --no-create-home --group --disabled-password --disabled-login testuser Added a user to a group: $ adduser testuser testgroup added lines to sudoers (visudo): testuser ALL=(ALL) NOPASSWD: ALL %testgroup ALL=(ALL:ALL) NOPASSWD: ALL When I try to run the bash script with the following content: #!/bin/sh sudo -u testuser /usr/bin/php /usr/local/bin/script.php But when I run this script, I get the error in the log: sudo: no tty present and no askpass program specified Edit: requiretty is not in the sudoers file. sudo permissions are