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#include <stdio.h>
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#include <stdlib.h>
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#include <unistd.h>
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#include <fcntl.h>
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int main(int argc, const char *argv[]) {
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int fd = open("/dev/watchdog", O_WRONLY);
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if (fd == -1) {
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perror("watchdog");
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exit(1);
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}
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while (1) {
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write(fd, "\0", 1);
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fsync(fd);
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sleep(10);
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}
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}
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