28 lines
553 B
C
28 lines
553 B
C
#include <stdio.h>
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#include <stdlib.h>
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#include <unistd.h>
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#include <sys/types.h>
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#include <sys/wait.h>
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int main() {
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char *command1[] = {"ls","ls", "-l", NULL};
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char *command2[] = {"wc","wc", "-l", NULL};
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int p[2];
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pipe(p);
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pid_t pid = fork();
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if (pid == 0) {
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close(p[1]);
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dup2(p[0], STDIN_FILENO);
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execvp(command2[0], command2+1);
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exit(-1);
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}
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else{
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close(p[0]);
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dup2(p[1], STDOUT_FILENO);
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execvp(command1[0], command1+1);
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exit(-1);
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}
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return 0;
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} |