bi_popen/README.md

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
• Todos
• Usage
• Acknowledgments
• License

Features

Todos

Usage

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

License

This project is licensed under the MIT License - see the MIT License file for details.