25 lines
444 B
C
25 lines
444 B
C
#include <stdio.h>
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#include <unistd.h>
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#include <fcntl.h>
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#include <stdlib.h>
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#include <sys/wait.h>
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int main() {
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int fp_in = open("./file.txt", O_RDONLY);
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int fp_out = open("./talk.out", O_CREAT | O_WRONLY);
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if(fork() == 0) {
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dup2(fp_in, STDIN_FILENO);
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dup2(fp_out, STDOUT_FILENO);
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execlp("./talk", "talk", (char *) 0);
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close(fp_in);
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close(fp_out);
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}
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else
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wait(NULL);
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}
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