# bi_popen

## Description
`bi_popen`

Creates two pipes, forks, and runs the given command.  One pipe is
connected between the given *in and the standard input stream of the child;
the other pipe is connected between the given *out and the standard output
stream of the child.

Returns the pid of the child on success, -1 otherwise.  On error, errno
will be set accordingly.

## Table of Contents

* [Features](#features)
* [Todos](#todos)
* [Usage](#usage)
* [Acknowledgments](#acknowledgments)
* [License](#license)


## Features

## Todos

## Usage

```c
int main(void)
{
    FILE* in = NULL;
    FILE* out = NULL;
    char* line = NULL;
    size_t size = 0;

    const int pid = bi_popen("/bin/bash", &in, &out);
    if (pid < 0) {
        perror("bi_popen");
        return 1;
    }

    fprintf(in, "date\n");
    getline(&line, &size, out);
    printf("-> %s", line);

    // Since in this case we can tell the child to terminate, we'll do so
    // and wait for it to terminate before we close down.
    fprintf(in, "exit\n");
    waitpid(pid, NULL, 0);

    fclose(in);
    fclose(out);

    return 0;
}

```

## Acknowledgments
[Unix Stack Exchange](https://unix.stackexchange.com/questions/606861/programming-communicating-with-chess-engine-stockfish-fifos-bash-redirecti)<br>
## License
This project is licensed under the MIT License - see the [MIT License](LICENSE.md) file for details.