65 lines
1.4 KiB
Markdown
65 lines
1.4 KiB
Markdown
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# bi_popen
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## Description
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`bi_popen`
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Creates two pipes, forks, and runs the given command. One pipe is
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connected between the given *in and the standard input stream of the child;
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the other pipe is connected between the given *out and the standard output
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stream of the child.
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Returns the pid of the child on success, -1 otherwise. On error, errno
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will be set accordingly.
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## Table of Contents
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* [Features](#features)
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* [Todos](#todos)
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* [Usage](#usage)
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* [Acknowledgments](#acknowledgments)
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* [License](#license)
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## Features
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## Todos
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## Usage
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```c
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int main(void)
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{
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FILE* in = NULL;
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FILE* out = NULL;
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char* line = NULL;
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size_t size = 0;
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const int pid = bi_popen("/bin/bash", &in, &out);
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if (pid < 0) {
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perror("bi_popen");
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return 1;
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}
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fprintf(in, "date\n");
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getline(&line, &size, out);
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printf("-> %s", line);
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// Since in this case we can tell the child to terminate, we'll do so
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// and wait for it to terminate before we close down.
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fprintf(in, "exit\n");
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waitpid(pid, NULL, 0);
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fclose(in);
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fclose(out);
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return 0;
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}
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```
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## Acknowledgments
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[Unix Stack Exchange](https://unix.stackexchange.com/questions/606861/programming-communicating-with-chess-engine-stockfish-fifos-bash-redirecti)<br>
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## License
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This project is licensed under the MIT License - see the [MIT License](LICENSE.md) file for details.
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