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26 lines
534 B
C
26 lines
534 B
C
#include <stdlib.h> /* exit(3), */
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#include <unistd.h> /* fork(2), sleep(3), */
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#include <sys/types.h> /* wait(2), */
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#include <sys/wait.h> /* wait(2), */
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int main(int argc, char *argv[])
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{
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int child_status;
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int status;
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switch (fork()) {
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case -1:
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exit(EXIT_FAILURE);
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case 0: /* Child */
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argc > 1 && sleep(2);
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exit(EXIT_SUCCESS);
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default: /* Parent */
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argc <= 1 && sleep(2);
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status = wait(&child_status);
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if (status < 0 || !WIFEXITED(child_status))
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exit(EXIT_FAILURE);
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exit(WEXITSTATUS(child_status));
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}
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}
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